Finding the Fourth Proportional to 2,620.44, 3,616.20 and 1,441.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.44 : 3,616.20 = 1,441.56 : x
2. Step 2: Convert to fraction form
   2,620.44/3,616.20 = 1,441.56/x
3. Step 3: Cross multiply
   2,620.44x = 3,616.20 × 1,441.56
4. Step 4: Simplify right side
   2,620.44x = 5,212,969.27
5. Step 5: Solve for x
   x = 5,212,969.27/2,620.44
6. Step 6: Final answer
   x = 1,989.35