Finding the Fourth Proportional to 2,620.50, 3,616.25 and 1,441.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.50 : 3,616.25 = 1,441.55 : x
2. Step 2: Convert to fraction form
   2,620.50/3,616.25 = 1,441.55/x
3. Step 3: Cross multiply
   2,620.50x = 3,616.25 × 1,441.55
4. Step 4: Simplify right side
   2,620.50x = 5,212,986.68
5. Step 5: Solve for x
   x = 5,212,986.68/2,620.50
6. Step 6: Final answer
   x = 1,989.31