1284 is an integer, not a fraction and there is no sensible way to express it as a fraction. However, if you must, it can be expressed as 1284/1.
100
187 to the nearest 100 = 200
100
The nearest 100 to 217 is 200.
1300
1300
It is: 1000
122 to the nearest 100 is 100
103 to the nearest hundreds is 100
1284 is an integer, not a fraction and there is no sensible way to express it as a fraction. However, if you must, it can be expressed as 1284/1.
100
4198 to the nearest 100 = 4200
That is 4800
100
100
100