Finding the Fourth Proportional to 2,644.92, 3,968.46 and 1,413.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.92 : 3,968.46 = 1,413.72 : x
2. Step 2: Convert to fraction form
   2,644.92/3,968.46 = 1,413.72/x
3. Step 3: Cross multiply
   2,644.92x = 3,968.46 × 1,413.72
4. Step 4: Simplify right side
   2,644.92x = 5,610,291.27
5. Step 5: Solve for x
   x = 5,610,291.27/2,644.92
6. Step 6: Final answer
   x = 2,121.16