Finding the Fourth Proportional to 2,601.20, 3,589.79 and 1,422.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.20 : 3,589.79 = 1,422.26 : x
2. Step 2: Convert to fraction form
   2,601.20/3,589.79 = 1,422.26/x
3. Step 3: Cross multiply
   2,601.20x = 3,589.79 × 1,422.26
4. Step 4: Simplify right side
   2,601.20x = 5,105,614.73
5. Step 5: Solve for x
   x = 5,105,614.73/2,601.20
6. Step 6: Final answer
   x = 1,962.79