Finding the Fourth Proportional to 3,713.17, 5,123.91 and 2,119.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,713.17 : 5,123.91 = 2,119.87 : x
2. Step 2: Convert to fraction form
   3,713.17/5,123.91 = 2,119.87/x
3. Step 3: Cross multiply
   3,713.17x = 5,123.91 × 2,119.87
4. Step 4: Simplify right side
   3,713.17x = 10,862,025.52
5. Step 5: Solve for x
   x = 10,862,025.52/3,713.17
6. Step 6: Final answer
   x = 2,925.27