Sorry, should have been more clear! No, it goes right before the path to the file, e.g.,
* * * * * . $HOME/.profile; /path/to/command
Depending on your system, you may have to do $HOME/.bash_profile instead of $HOME/.profile.
But just a heads up, although I'm no server admin, I do know that usually what they do is set all of the required environmental variables in a script that is to be run from a cron job. This method above should work, but it's considered bad practice. I say get it working first, then worry about good or bad practice