Finding the Fourth Proportional to 2,158.65, 3,235.52 and 925.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.65 : 3,235.52 = 925.43 : x
2. Step 2: Convert to fraction form
   2,158.65/3,235.52 = 925.43/x
3. Step 3: Cross multiply
   2,158.65x = 3,235.52 × 925.43
4. Step 4: Simplify right side
   2,158.65x = 2,994,233.41
5. Step 5: Solve for x
   x = 2,994,233.41/2,158.65
6. Step 6: Final answer
   x = 1,387.09