Arrange the following set of decimal numbers.
1.Least to Greatest-
6.134 , 8.015 , 3.98
2.Greatest to Least-
0.541 , 0.314 , 0521
3.Greatest to Least-
19.6 , 19.006 , 19.06
4.Least to Greatest-
714.4 , 0.7134 , 7.134
5.Greatest to Least-
509.107 , 590.817 , 5,190.18