Finding the Fourth Proportional to 1,096.30, 1,512.72 and 624.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.30 : 1,512.72 = 624.21 : x
2. Step 2: Convert to fraction form
   1,096.30/1,512.72 = 624.21/x
3. Step 3: Cross multiply
   1,096.30x = 1,512.72 × 624.21
4. Step 4: Simplify right side
   1,096.30x = 944,258.96
5. Step 5: Solve for x
   x = 944,258.96/1,096.30
6. Step 6: Final answer
   x = 861.32