Connect 3 External Monitors to Spectre x360

[JEP2011]

Laptop: HP - Spectre x360 2-in-1 15.6" 4K Ultra HD Touch-Screen Laptop - Intel Core i7 - 16GB Memory - 512GB SSD 

Issue: I want to connect 3 external monitors to use in addition to the laptop screen. (So a total of 4 screens)

1) First Monitor (Dell - has a VGA cord) connected to the laptop via the HDMI port on the laptop via an VGA/HDMI adaptor

2) Second Monitor (HP Pavilion 23bs - has a VGA cord) connected to the laptop via the HP docking station(HP Spectre Travel Dock for HP USB-C Charging Laptops (with VGA, HDMI, Ethernet, and multiple USB por.... The monitor is plugged into the VGA port on the docking station. 

3) Third Monitor (HP 24ea IPS - has an HDMI cord). 

I can't get the laptop to recognize the Third Monitor. 

• I've tried to plug it directly into the HDMI port on the docking station. 
• I've also tried to connect the third monitor to the USB port directly on the laptop via an adaptor (USB to HDMI). 
• Also tried to plug the third monitor directly into the HDMI port on the laptop and plug the First monitor via HDMI adaptor into the docking station (then that monitor doesn't work). 

Do I need a different docking station to be able to use 3 external monitors along with the laptop screen? Do I need a specific driver to be able to use  3 external monitors along with the laptop screen?

Thanks in advance for any guidance. 

[banhien]

@JEP2011 

There are few of them on the following list

           https://www8.hp.com/h20195/v2/getpdf.aspx/c04168358

Resolutions could be the killer. Each dock has a table which shows you what you can get and what is/are the result(s). Please check yourself and make decision.

For third party docks, please enter your requirement on the following link and it will find for you few options on market today including some HP products:

     https://www.displaylink.com/products/universal-docking-stations

Regards.