Hi change the config like that

<VirtualHost www.ioprogetto.net:80>
ServerName www.ioprogetto.net
ErrorLog logs/ioprogetto.net-error_log
CustomLog logs/ioprogetto.net-access_log combined
env=!do_not_log
DocumentRoot /var/www/html/1
<Directory "/var/www/html/1/">
Options MultiViews
AllowOverride None
Order allow,deny
Allow from all
</Directory>

ProxyPassReverse /test http://192.168.0.52/
ProxyPass /test http://192.168.0.52/
</VirtualHost>

the virtualhost is working since I see the page that is different from
the default,
when I go under test I have error 403

[Tue Jan 17 11:34:13 2006] [error] [client X.X.X.X] client denied by
server configuration: proxy:http://192.168.0.52/