Finding the Fourth Proportional to 2,620.61, 3,616.29 and 1,441.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.61 : 3,616.29 = 1,441.46 : x
2. Step 2: Convert to fraction form
   2,620.61/3,616.29 = 1,441.46/x
3. Step 3: Cross multiply
   2,620.61x = 3,616.29 × 1,441.46
4. Step 4: Simplify right side
   2,620.61x = 5,212,719.30
5. Step 5: Solve for x
   x = 5,212,719.30/2,620.61
6. Step 6: Final answer
   x = 1,989.13