Finding the Fourth Proportional to 1,180.96, 1,629.72 and 708.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.96 : 1,629.72 = 708.94 : x
2. Step 2: Convert to fraction form
   1,180.96/1,629.72 = 708.94/x
3. Step 3: Cross multiply
   1,180.96x = 1,629.72 × 708.94
4. Step 4: Simplify right side
   1,180.96x = 1,155,373.70
5. Step 5: Solve for x
   x = 1,155,373.70/1,180.96
6. Step 6: Final answer
   x = 978.33