Finding the Fourth Proportional to 1,096.18, 1,512.86 and 630.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.18 : 1,512.86 = 630.42 : x
2. Step 2: Convert to fraction form
   1,096.18/1,512.86 = 630.42/x
3. Step 3: Cross multiply
   1,096.18x = 1,512.86 × 630.42
4. Step 4: Simplify right side
   1,096.18x = 953,737.20
5. Step 5: Solve for x
   x = 953,737.20/1,096.18
6. Step 6: Final answer
   x = 870.06