Finding the Fourth Proportional to 1,120.94, 1,546.57 and 648.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.94 : 1,546.57 = 648.71 : x
2. Step 2: Convert to fraction form
   1,120.94/1,546.57 = 648.71/x
3. Step 3: Cross multiply
   1,120.94x = 1,546.57 × 648.71
4. Step 4: Simplify right side
   1,120.94x = 1,003,275.42
5. Step 5: Solve for x
   x = 1,003,275.42/1,120.94
6. Step 6: Final answer
   x = 895.03