Finding the Fourth Proportional to 2,413.31, 3,620.28 and 681.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,413.31 : 3,620.28 = 681.98 : x
2. Step 2: Convert to fraction form
   2,413.31/3,620.28 = 681.98/x
3. Step 3: Cross multiply
   2,413.31x = 3,620.28 × 681.98
4. Step 4: Simplify right side
   2,413.31x = 2,468,958.55
5. Step 5: Solve for x
   x = 2,468,958.55/2,413.31
6. Step 6: Final answer
   x = 1,023.06