Finding the Fourth Proportional to 1,358.52, 1,874.90 and 769.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.52 : 1,874.90 = 769.10 : x
2. Step 2: Convert to fraction form
   1,358.52/1,874.90 = 769.10/x
3. Step 3: Cross multiply
   1,358.52x = 1,874.90 × 769.10
4. Step 4: Simplify right side
   1,358.52x = 1,441,973.81
5. Step 5: Solve for x
   x = 1,441,973.81/1,358.52
6. Step 6: Final answer
   x = 1,061.43