Finding the Fourth Proportional to 1,040.73, 1,436.34 and 647.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.73 : 1,436.34 = 647.82 : x
2. Step 2: Convert to fraction form
   1,040.73/1,436.34 = 647.82/x
3. Step 3: Cross multiply
   1,040.73x = 1,436.34 × 647.82
4. Step 4: Simplify right side
   1,040.73x = 930,489.78
5. Step 5: Solve for x
   x = 930,489.78/1,040.73
6. Step 6: Final answer
   x = 894.07