Finding the Fourth Proportional to 2,158.29, 3,238.86 and 925.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.29 : 3,238.86 = 925.95 : x
2. Step 2: Convert to fraction form
   2,158.29/3,238.86 = 925.95/x
3. Step 3: Cross multiply
   2,158.29x = 3,238.86 × 925.95
4. Step 4: Simplify right side
   2,158.29x = 2,999,022.42
5. Step 5: Solve for x
   x = 2,999,022.42/2,158.29
6. Step 6: Final answer
   x = 1,389.54