Finding the Fourth Proportional to 3,718.29, 5,131.28 and 2,125.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,718.29 : 5,131.28 = 2,125.15 : x
2. Step 2: Convert to fraction form
   3,718.29/5,131.28 = 2,125.15/x
3. Step 3: Cross multiply
   3,718.29x = 5,131.28 × 2,125.15
4. Step 4: Simplify right side
   3,718.29x = 10,904,761.04
5. Step 5: Solve for x
   x = 10,904,761.04/3,718.29
6. Step 6: Final answer
   x = 2,932.74