Finding the Fourth Proportional to 2,250.78, 3,106.08 and 1,256.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,250.78 : 3,106.08 = 1,256.13 : x
2. Step 2: Convert to fraction form
   2,250.78/3,106.08 = 1,256.13/x
3. Step 3: Cross multiply
   2,250.78x = 3,106.08 × 1,256.13
4. Step 4: Simplify right side
   2,250.78x = 3,901,640.27
5. Step 5: Solve for x
   x = 3,901,640.27/2,250.78
6. Step 6: Final answer
   x = 1,733.46