Finding the Fourth Proportional to 1,096.56, 1,513.32 and 630.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.56 : 1,513.32 = 630.88 : x
2. Step 2: Convert to fraction form
   1,096.56/1,513.32 = 630.88/x
3. Step 3: Cross multiply
   1,096.56x = 1,513.32 × 630.88
4. Step 4: Simplify right side
   1,096.56x = 954,723.32
5. Step 5: Solve for x
   x = 954,723.32/1,096.56
6. Step 6: Final answer
   x = 870.65