Finding the Fourth Proportional to 3,624.71, 5,436.87 and 992.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,624.71 : 5,436.87 = 992.02 : x
2. Step 2: Convert to fraction form
   3,624.71/5,436.87 = 992.02/x
3. Step 3: Cross multiply
   3,624.71x = 5,436.87 × 992.02
4. Step 4: Simplify right side
   3,624.71x = 5,393,502.72
5. Step 5: Solve for x
   x = 5,393,502.72/3,624.71
6. Step 6: Final answer
   x = 1,487.98