Finding the Fourth Proportional to 1,196.64, 1,650.98 and 724.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.64 : 1,650.98 = 724.71 : x
2. Step 2: Convert to fraction form
   1,196.64/1,650.98 = 724.71/x
3. Step 3: Cross multiply
   1,196.64x = 1,650.98 × 724.71
4. Step 4: Simplify right side
   1,196.64x = 1,196,489.72
5. Step 5: Solve for x
   x = 1,196,489.72/1,196.64
6. Step 6: Final answer
   x = 999.87