Finding the Fourth Proportional to 1,120.30, 1,546.02 and 648.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.30 : 1,546.02 = 648.28 : x
2. Step 2: Convert to fraction form
   1,120.30/1,546.02 = 648.28/x
3. Step 3: Cross multiply
   1,120.30x = 1,546.02 × 648.28
4. Step 4: Simplify right side
   1,120.30x = 1,002,253.85
5. Step 5: Solve for x
   x = 1,002,253.85/1,120.30
6. Step 6: Final answer
   x = 894.63