Finding the Fourth Proportional to 1,081.18, 1,491.50 and 708.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.18 : 1,491.50 = 708.02 : x
2. Step 2: Convert to fraction form
   1,081.18/1,491.50 = 708.02/x
3. Step 3: Cross multiply
   1,081.18x = 1,491.50 × 708.02
4. Step 4: Simplify right side
   1,081.18x = 1,056,011.83
5. Step 5: Solve for x
   x = 1,056,011.83/1,081.18
6. Step 6: Final answer
   x = 976.72