Finding the Fourth Proportional to 1,096.56, 1,512.81 and 654.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.56 : 1,512.81 = 654.21 : x
2. Step 2: Convert to fraction form
   1,096.56/1,512.81 = 654.21/x
3. Step 3: Cross multiply
   1,096.56x = 1,512.81 × 654.21
4. Step 4: Simplify right side
   1,096.56x = 989,695.43
5. Step 5: Solve for x
   x = 989,695.43/1,096.56
6. Step 6: Final answer
   x = 902.55