Finding the Fourth Proportional to 2,916.89, 4,375.32 and 725.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,916.89 : 4,375.32 = 725.61 : x
2. Step 2: Convert to fraction form
   2,916.89/4,375.32 = 725.61/x
3. Step 3: Cross multiply
   2,916.89x = 4,375.32 × 725.61
4. Step 4: Simplify right side
   2,916.89x = 3,174,775.95
5. Step 5: Solve for x
   x = 3,174,775.95/2,916.89
6. Step 6: Final answer
   x = 1,088.41