Finding the Fourth Proportional to 1,120.70, 1,546.43 and 648.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.70 : 1,546.43 = 648.52 : x
2. Step 2: Convert to fraction form
   1,120.70/1,546.43 = 648.52/x
3. Step 3: Cross multiply
   1,120.70x = 1,546.43 × 648.52
4. Step 4: Simplify right side
   1,120.70x = 1,002,883.67
5. Step 5: Solve for x
   x = 1,002,883.67/1,120.70
6. Step 6: Final answer
   x = 894.87