Finding the Fourth Proportional to 2,620.60, 3,616.42 and 1,441.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.60 : 3,616.42 = 1,441.67 : x
2. Step 2: Convert to fraction form
   2,620.60/3,616.42 = 1,441.67/x
3. Step 3: Cross multiply
   2,620.60x = 3,616.42 × 1,441.67
4. Step 4: Simplify right side
   2,620.60x = 5,213,662.54
5. Step 5: Solve for x
   x = 5,213,662.54/2,620.60
6. Step 6: Final answer
   x = 1,989.49