Finding the Fourth Proportional to 2,620.54, 3,616.40 and 1,441.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.54 : 3,616.40 = 1,441.68 : x
2. Step 2: Convert to fraction form
   2,620.54/3,616.40 = 1,441.68/x
3. Step 3: Cross multiply
   2,620.54x = 3,616.40 × 1,441.68
4. Step 4: Simplify right side
   2,620.54x = 5,213,691.55
5. Step 5: Solve for x
   x = 5,213,691.55/2,620.54
6. Step 6: Final answer
   x = 1,989.55