Answer: 0.9358
Explanation:
I used a calculator for this one. I just went into the catalog and looked for LOG(BASE) and then plugged in. I know there are other ways to figure it out, but I cannot quite remember how to do that, it's been so long, so I am sorry for that. 
The full answer was 0.935784974 
round to 4 decimal places=0.9358