Finding the Fourth Proportional to 2,158.43, 3,237.84 and 925.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.43 : 3,237.84 = 925.61 : x
2. Step 2: Convert to fraction form
   2,158.43/3,237.84 = 925.61/x
3. Step 3: Cross multiply
   2,158.43x = 3,237.84 × 925.61
4. Step 4: Simplify right side
   2,158.43x = 2,996,960.89
5. Step 5: Solve for x
   x = 2,996,960.89/2,158.43
6. Step 6: Final answer
   x = 1,388.49