Finding the Fourth Proportional to 2,250.78, 3,105.94 and 1,256.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,250.78 : 3,105.94 = 1,256.01 : x
2. Step 2: Convert to fraction form
   2,250.78/3,105.94 = 1,256.01/x
3. Step 3: Cross multiply
   2,250.78x = 3,105.94 × 1,256.01
4. Step 4: Simplify right side
   2,250.78x = 3,901,091.70
5. Step 5: Solve for x
   x = 3,901,091.70/2,250.78
6. Step 6: Final answer
   x = 1,733.22