Finding the Fourth Proportional to 1,041.86, 1,436.37 and 648.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,041.86 : 1,436.37 = 648.74 : x
2. Step 2: Convert to fraction form
   1,041.86/1,436.37 = 648.74/x
3. Step 3: Cross multiply
   1,041.86x = 1,436.37 × 648.74
4. Step 4: Simplify right side
   1,041.86x = 931,831.83
5. Step 5: Solve for x
   x = 931,831.83/1,041.86
6. Step 6: Final answer
   x = 894.39