Finding the Fourth Proportional to 1,150.38, 1,724.85 and 765.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.38 : 1,724.85 = 765.18 : x
2. Step 2: Convert to fraction form
   1,150.38/1,724.85 = 765.18/x
3. Step 3: Cross multiply
   1,150.38x = 1,724.85 × 765.18
4. Step 4: Simplify right side
   1,150.38x = 1,319,820.72
5. Step 5: Solve for x
   x = 1,319,820.72/1,150.38
6. Step 6: Final answer
   x = 1,147.29