Finding the Fourth Proportional to 3,413.16, 5,115.15 and 1,766.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,413.16 : 5,115.15 = 1,766.25 : x
2. Step 2: Convert to fraction form
   3,413.16/5,115.15 = 1,766.25/x
3. Step 3: Cross multiply
   3,413.16x = 5,115.15 × 1,766.25
4. Step 4: Simplify right side
   3,413.16x = 9,034,633.69
5. Step 5: Solve for x
   x = 9,034,633.69/3,413.16
6. Step 6: Final answer
   x = 2,647.00