Finding the Fourth Proportional to 1,359.28, 1,875.79 and 753.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.28 : 1,875.79 = 753.61 : x
2. Step 2: Convert to fraction form
   1,359.28/1,875.79 = 753.61/x
3. Step 3: Cross multiply
   1,359.28x = 1,875.79 × 753.61
4. Step 4: Simplify right side
   1,359.28x = 1,413,600.95
5. Step 5: Solve for x
   x = 1,413,600.95/1,359.28
6. Step 6: Final answer
   x = 1,039.96