Finding the Fourth Proportional to 1,359.06, 1,875.50 and 769.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.06 : 1,875.50 = 769.70 : x
2. Step 2: Convert to fraction form
   1,359.06/1,875.50 = 769.70/x
3. Step 3: Cross multiply
   1,359.06x = 1,875.50 × 769.70
4. Step 4: Simplify right side
   1,359.06x = 1,443,576.08
5. Step 5: Solve for x
   x = 1,443,576.08/1,359.06
6. Step 6: Final answer
   x = 1,062.19