Apache: When access vHost on specific port forward to another server

Question

I have set up a project on my local machine (Win8, XAMPP), the URL http://local.project.com maps to 127.0.0.1 in my hosts file.

When the application calls XHRs with the base URL http://local.project.com:8080/ apache should forward this request to another server in my network (e.g. 192.168.35.16:8080).

So for example:

http://local.project.com/index.js should point to http://local.project.com/index.js http://local.project.com:8080/index.js should point to http://192.168.35.16:8080/index.js

How can I achieve this with Apache?