Finding the Fourth Proportional to 1,158.32, 1,598.67 and 864.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.32 : 1,598.67 = 864.43 : x
2. Step 2: Convert to fraction form
   1,158.32/1,598.67 = 864.43/x
3. Step 3: Cross multiply
   1,158.32x = 1,598.67 × 864.43
4. Step 4: Simplify right side
   1,158.32x = 1,381,934.31
5. Step 5: Solve for x
   x = 1,381,934.31/1,158.32
6. Step 6: Final answer
   x = 1,193.05