Finding the Fourth Proportional to 1,096.31, 1,512.91 and 630.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.31 : 1,512.91 = 630.56 : x
2. Step 2: Convert to fraction form
   1,096.31/1,512.91 = 630.56/x
3. Step 3: Cross multiply
   1,096.31x = 1,512.91 × 630.56
4. Step 4: Simplify right side
   1,096.31x = 953,985.10
5. Step 5: Solve for x
   x = 953,985.10/1,096.31
6. Step 6: Final answer
   x = 870.18