Finding the Fourth Proportional to 1,358.52, 1,874.66 and 769.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.52 : 1,874.66 = 769.12 : x
2. Step 2: Convert to fraction form
   1,358.52/1,874.66 = 769.12/x
3. Step 3: Cross multiply
   1,358.52x = 1,874.66 × 769.12
4. Step 4: Simplify right side
   1,358.52x = 1,441,838.50
5. Step 5: Solve for x
   x = 1,441,838.50/1,358.52
6. Step 6: Final answer
   x = 1,061.33