Finding the Fourth Proportional to 1,008.16, 1,391.46 and 654.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.16 : 1,391.46 = 654.52 : x
2. Step 2: Convert to fraction form
   1,008.16/1,391.46 = 654.52/x
3. Step 3: Cross multiply
   1,008.16x = 1,391.46 × 654.52
4. Step 4: Simplify right side
   1,008.16x = 910,738.40
5. Step 5: Solve for x
   x = 910,738.40/1,008.16
6. Step 6: Final answer
   x = 903.37