2/7, 1/3, 2/9, 2/5, 4/1
The only one bigger than 1 is 4/1, so that goes on the end.
2/7, 1/3, 2/9, 2/5
2/7, 3/9, 2/9, 2/5
18/63, 21/63, 14/63, 2/5
90/315, 105/315, 70/315, 126/315
In order: 70/315, 90/315, 105/315, 126/315
Using the original fractions: 2/9, 2/7, 1/3, 2/5
No forgetting the 4/1 on the end, the answer is:
2/9, 2/7, 1/3, 2/5, 4/1