I am wondering which exact Revenue fields you are looking at. Technically, you can create a Custom Field that is based on a formula. Within the formula, you would calculate the fields as required to get the value you are looking for. This will allow you to then report on this custom field to show the data in Reports as desired.
For further clarification, we suggest you register for one of our Reports and Dashboards Training or Office Hours - Advanced Configuration Webinars (see the link-> http://www.clarizen.com/resources/online-demo.html#second ).These are free training sessions hosted by Clarizen Experts and offered weekly.