wan to wan port forwarding

Hello

I have a PC that is running behind a firewall, but I need to access from this PC a certain url (IP and port).
Because the port is closed I decided to try to use my home router (mikrotik with os version 6.48.1) as “proxy” (just the router, no other machine).
I already opened in router firewall the possibility to access it from that particular PC (having a fix IP, I accepted any connection from that IP).
Is it possible to redirect the connection from that IP and a certain port (let’s say 8080) to the real WAN IP and port that I actually want to access?
I am open to other solutions if available (SSH maybe?), as long as only the router is involved.

Thank you.

Draw a diagram showing the connectivity you have and desired…
Description is messy thus far.