Finding the Fourth Proportional to 2,250.79, 3,105.97 and 1,256.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,250.79 : 3,105.97 = 1,256.15 : x
2. Step 2: Convert to fraction form
   2,250.79/3,105.97 = 1,256.15/x
3. Step 3: Cross multiply
   2,250.79x = 3,105.97 × 1,256.15
4. Step 4: Simplify right side
   2,250.79x = 3,901,568.84
5. Step 5: Solve for x
   x = 3,901,568.84/2,250.79
6. Step 6: Final answer
   x = 1,733.42