Finding the Fourth Proportional to 2,620.39, 3,616.22 and 1,441.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.39 : 3,616.22 = 1,441.47 : x
2. Step 2: Convert to fraction form
   2,620.39/3,616.22 = 1,441.47/x
3. Step 3: Cross multiply
   2,620.39x = 3,616.22 × 1,441.47
4. Step 4: Simplify right side
   2,620.39x = 5,212,672.64
5. Step 5: Solve for x
   x = 5,212,672.64/2,620.39
6. Step 6: Final answer
   x = 1,989.27