Finding the Fourth Proportional to 2,617.38, 3,925.05 and 1,057.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.38 : 3,925.05 = 1,057.10 : x
2. Step 2: Convert to fraction form
   2,617.38/3,925.05 = 1,057.10/x
3. Step 3: Cross multiply
   2,617.38x = 3,925.05 × 1,057.10
4. Step 4: Simplify right side
   2,617.38x = 4,149,146.77
5. Step 5: Solve for x
   x = 4,149,146.77/2,617.38
6. Step 6: Final answer
   x = 1,585.23