Finding the Fourth Proportional to 1,120.73, 1,546.49 and 648.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.73 : 1,546.49 = 648.43 : x
2. Step 2: Convert to fraction form
   1,120.73/1,546.49 = 648.43/x
3. Step 3: Cross multiply
   1,120.73x = 1,546.49 × 648.43
4. Step 4: Simplify right side
   1,120.73x = 1,002,788.27
5. Step 5: Solve for x
   x = 1,002,788.27/1,120.73
6. Step 6: Final answer
   x = 894.77