Finding the Fourth Proportional to 2,620.69, 3,616.58 and 1,441.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.69 : 3,616.58 = 1,441.73 : x
2. Step 2: Convert to fraction form
   2,620.69/3,616.58 = 1,441.73/x
3. Step 3: Cross multiply
   2,620.69x = 3,616.58 × 1,441.73
4. Step 4: Simplify right side
   2,620.69x = 5,214,144.53
5. Step 5: Solve for x
   x = 5,214,144.53/2,620.69
6. Step 6: Final answer
   x = 1,989.61