Finding the Fourth Proportional to 2,372.29, 3,558.89 and 728.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,372.29 : 3,558.89 = 728.55 : x
2. Step 2: Convert to fraction form
   2,372.29/3,558.89 = 728.55/x
3. Step 3: Cross multiply
   2,372.29x = 3,558.89 × 728.55
4. Step 4: Simplify right side
   2,372.29x = 2,592,829.31
5. Step 5: Solve for x
   x = 2,592,829.31/2,372.29
6. Step 6: Final answer
   x = 1,092.96