Finding the Fourth Proportional to 2,220.51, 3,065.31 and 1,413.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220.51 : 3,065.31 = 1,413.30 : x
2. Step 2: Convert to fraction form
   2,220.51/3,065.31 = 1,413.30/x
3. Step 3: Cross multiply
   2,220.51x = 3,065.31 × 1,413.30
4. Step 4: Simplify right side
   2,220.51x = 4,332,187.30
5. Step 5: Solve for x
   x = 4,332,187.30/2,220.51
6. Step 6: Final answer
   x = 1,950.99