Finding the Fourth Proportional to 1,096.56, 1,513.08 and 630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.56 : 1,513.08 = 630.72 : x
2. Step 2: Convert to fraction form
   1,096.56/1,513.08 = 630.72/x
3. Step 3: Cross multiply
   1,096.56x = 1,513.08 × 630.72
4. Step 4: Simplify right side
   1,096.56x = 954,329.82
5. Step 5: Solve for x
   x = 954,329.82/1,096.56
6. Step 6: Final answer
   x = 870.29