Finding the Fourth Proportional to 2,474.31, 3,711.42 and 993.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,474.31 : 3,711.42 = 993.87 : x
2. Step 2: Convert to fraction form
   2,474.31/3,711.42 = 993.87/x
3. Step 3: Cross multiply
   2,474.31x = 3,711.42 × 993.87
4. Step 4: Simplify right side
   2,474.31x = 3,688,669.00
5. Step 5: Solve for x
   x = 3,688,669.00/2,474.31
6. Step 6: Final answer
   x = 1,490.79