Finding the Fourth Proportional to 2,601.28, 3,589.82 and 1,422.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.28 : 3,589.82 = 1,422.40 : x
2. Step 2: Convert to fraction form
   2,601.28/3,589.82 = 1,422.40/x
3. Step 3: Cross multiply
   2,601.28x = 3,589.82 × 1,422.40
4. Step 4: Simplify right side
   2,601.28x = 5,106,159.97
5. Step 5: Solve for x
   x = 5,106,159.97/2,601.28
6. Step 6: Final answer
   x = 1,962.94