For each set of numbers, find the mean, median, and mode. If necessary, round the mean to one decimal place.
1. 45, 36, 28, 46, 52
2. 4.9, 7.1, 6.8, 6.8, 5.3, 4.9
3. 0.6, 0.6, 0.8, 0.4, 0.5, 0.3, 0.7, 0.8, 0.1
4. 451, 356, 478, 776, 892, 500, 467, 780