Apptivo allows you to integrate your E-Commerce with Google analytics.
Follow the following steps to enable Google analytics for your site.
Step 1: Create a Google analytics account at www.google.com/analytics/
Step 2: Follow the directions in Google analytics to Add your website
Step 3: Copy the tracking code which is generated by Google Analytics
Step 4: Paste the code in text box provided in Content Management> Google Analytics and save it