Finding the Fourth Proportional to 2,957.86, 4,413.59 and 2,647.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,957.86 : 4,413.59 = 2,647.57 : x
2. Step 2: Convert to fraction form
   2,957.86/4,413.59 = 2,647.57/x
3. Step 3: Cross multiply
   2,957.86x = 4,413.59 × 2,647.57
4. Step 4: Simplify right side
   2,957.86x = 11,685,288.48
5. Step 5: Solve for x
   x = 11,685,288.48/2,957.86
6. Step 6: Final answer
   x = 3,950.59