Finding the Fourth Proportional to 1,087.59, 1,630.53 and 502.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.59 : 1,630.53 = 502.98 : x
2. Step 2: Convert to fraction form
   1,087.59/1,630.53 = 502.98/x
3. Step 3: Cross multiply
   1,087.59x = 1,630.53 × 502.98
4. Step 4: Simplify right side
   1,087.59x = 820,123.98
5. Step 5: Solve for x
   x = 820,123.98/1,087.59
6. Step 6: Final answer
   x = 754.07