Finding the Fourth Proportional to 3,200.72, 4,413.69 and 2,081.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,200.72 : 4,413.69 = 2,081.70 : x
2. Step 2: Convert to fraction form
   3,200.72/4,413.69 = 2,081.70/x
3. Step 3: Cross multiply
   3,200.72x = 4,413.69 × 2,081.70
4. Step 4: Simplify right side
   3,200.72x = 9,187,978.47
5. Step 5: Solve for x
   x = 9,187,978.47/3,200.72
6. Step 6: Final answer
   x = 2,870.60