Finding the Fourth Proportional to 1,151.64, 1,724.72 and 630.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.64 : 1,724.72 = 630.86 : x
2. Step 2: Convert to fraction form
   1,151.64/1,724.72 = 630.86/x
3. Step 3: Cross multiply
   1,151.64x = 1,724.72 × 630.86
4. Step 4: Simplify right side
   1,151.64x = 1,088,056.86
5. Step 5: Solve for x
   x = 1,088,056.86/1,151.64
6. Step 6: Final answer
   x = 944.79