Finding the Fourth Proportional to 2,601.59, 3,590.20 and 1,422.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.59 : 3,590.20 = 1,422.66 : x
2. Step 2: Convert to fraction form
   2,601.59/3,590.20 = 1,422.66/x
3. Step 3: Cross multiply
   2,601.59x = 3,590.20 × 1,422.66
4. Step 4: Simplify right side
   2,601.59x = 5,107,633.93
5. Step 5: Solve for x
   x = 5,107,633.93/2,601.59
6. Step 6: Final answer
   x = 1,963.27