André Scholten wrote a post on yoast.com on how track SEO rankings with Google Analytics. As that post raised a lot of questions, I've made a quick video on how to implement the ranking filter, and the organic filters that André mentioned.
I've also added a third filter, lowercasing the campaign term so the results look good.
1. Add a website profile
2. Add an organic filter
3. Add a filter to show just Google (optional)
4. Add a filter lowercasing the campaign term
5. Adding the keyword ranking to the term.
Read André's full post here: yoast.com/track-seo-rankings-google-analytics/