Finding the Fourth Proportional to 1,359.32, 1,875.69 and 769.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.32 : 1,875.69 = 769.70 : x
2. Step 2: Convert to fraction form
   1,359.32/1,875.69 = 769.70/x
3. Step 3: Cross multiply
   1,359.32x = 1,875.69 × 769.70
4. Step 4: Simplify right side
   1,359.32x = 1,443,723.28
5. Step 5: Solve for x
   x = 1,443,723.28/1,359.32
6. Step 6: Final answer
   x = 1,062.10