Finding the Fourth Proportional to 1,096.50, 1,513.17 and 631.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.50 : 1,513.17 = 631.02 : x
2. Step 2: Convert to fraction form
   1,096.50/1,513.17 = 631.02/x
3. Step 3: Cross multiply
   1,096.50x = 1,513.17 × 631.02
4. Step 4: Simplify right side
   1,096.50x = 954,840.53
5. Step 5: Solve for x
   x = 954,840.53/1,096.50
6. Step 6: Final answer
   x = 870.81