Finding the Fourth Proportional to 1,413.97, 2,118.12 and 681.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.97 : 2,118.12 = 681.37 : x
2. Step 2: Convert to fraction form
   1,413.97/2,118.12 = 681.37/x
3. Step 3: Cross multiply
   1,413.97x = 2,118.12 × 681.37
4. Step 4: Simplify right side
   1,413.97x = 1,443,223.42
5. Step 5: Solve for x
   x = 1,443,223.42/1,413.97
6. Step 6: Final answer
   x = 1,020.69