Finding the Fourth Proportional to 2,620.72, 3,616.52 and 1,441.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.72 : 3,616.52 = 1,441.79 : x
2. Step 2: Convert to fraction form
   2,620.72/3,616.52 = 1,441.79/x
3. Step 3: Cross multiply
   2,620.72x = 3,616.52 × 1,441.79
4. Step 4: Simplify right side
   2,620.72x = 5,214,262.37
5. Step 5: Solve for x
   x = 5,214,262.37/2,620.72
6. Step 6: Final answer
   x = 1,989.63