Finding the Fourth Proportional to 1,359.48, 2,037.78 and 708.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.48 : 2,037.78 = 708.78 : x
2. Step 2: Convert to fraction form
   1,359.48/2,037.78 = 708.78/x
3. Step 3: Cross multiply
   1,359.48x = 2,037.78 × 708.78
4. Step 4: Simplify right side
   1,359.48x = 1,444,337.71
5. Step 5: Solve for x
   x = 1,444,337.71/1,359.48
6. Step 6: Final answer
   x = 1,062.42