Finding the Fourth Proportional to 1,358.71, 1,875.06 and 769.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.71 : 1,875.06 = 769.33 : x
2. Step 2: Convert to fraction form
   1,358.71/1,875.06 = 769.33/x
3. Step 3: Cross multiply
   1,358.71x = 1,875.06 × 769.33
4. Step 4: Simplify right side
   1,358.71x = 1,442,539.91
5. Step 5: Solve for x
   x = 1,442,539.91/1,358.71
6. Step 6: Final answer
   x = 1,061.70