Finding the Fourth Proportional to 2,620.64, 3,616.56 and 1,441.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.64 : 3,616.56 = 1,441.79 : x
2. Step 2: Convert to fraction form
   2,620.64/3,616.56 = 1,441.79/x
3. Step 3: Cross multiply
   2,620.64x = 3,616.56 × 1,441.79
4. Step 4: Simplify right side
   2,620.64x = 5,214,320.04
5. Step 5: Solve for x
   x = 5,214,320.04/2,620.64
6. Step 6: Final answer
   x = 1,989.71