Finding the Fourth Proportional to 1,182.50, 1,631.98 and 716.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.50 : 1,631.98 = 716.76 : x
2. Step 2: Convert to fraction form
   1,182.50/1,631.98 = 716.76/x
3. Step 3: Cross multiply
   1,182.50x = 1,631.98 × 716.76
4. Step 4: Simplify right side
   1,182.50x = 1,169,737.98
5. Step 5: Solve for x
   x = 1,169,737.98/1,182.50
6. Step 6: Final answer
   x = 989.21