Finding the Fourth Proportional to 1,146.27, 1,581.78 and 648.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.27 : 1,581.78 = 648.93 : x
2. Step 2: Convert to fraction form
   1,146.27/1,581.78 = 648.93/x
3. Step 3: Cross multiply
   1,146.27x = 1,581.78 × 648.93
4. Step 4: Simplify right side
   1,146.27x = 1,026,464.50
5. Step 5: Solve for x
   x = 1,026,464.50/1,146.27
6. Step 6: Final answer
   x = 895.48