Finding the Fourth Proportional to 2,620.69, 3,616.65 and 1,441.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.69 : 3,616.65 = 1,441.85 : x
2. Step 2: Convert to fraction form
   2,620.69/3,616.65 = 1,441.85/x
3. Step 3: Cross multiply
   2,620.69x = 3,616.65 × 1,441.85
4. Step 4: Simplify right side
   2,620.69x = 5,214,666.80
5. Step 5: Solve for x
   x = 5,214,666.80/2,620.69
6. Step 6: Final answer
   x = 1,989.81