How to configure nginx to serve single named virtualhost when apache2 has multiple virtualhost

Question

i have two virtual hosts

Name: host1.localhost.com & host2.localhost.com

I want to reverse proxy through nginx for host1.localhost.com

apache2 ports configuration : Listen 8090 apache2 configuration for host1 :

<VirtusalHost *:8090>
  ServerName host1.localhost.com
  DocumentRoot /var/www/facebook
  DirectoryIndex index.html
</VirtualHost>

apache2 configuration for host2 :

<VirtualHost *:8090>
  ServerName host2.localhost.com
  DocumentRoot /var/www/facebook
  DirectoryIndex index.html
</VirtualHost>

nginx server configuration:

server {
 listen 80;
 location / {
 proxy_pass http://127.0.0.1:8090;
}
}

Now i need to access host1.localhost.com through apache2 server like host1.localhost.com:8090.

And host2.localhost.com need to reverse proxy through nginx.

And nginx server do not have to authortiy to run host1.localhost.com.