Finding the Fourth Proportional to 2,601.66, 3,590.25 and 1,422.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.66 : 3,590.25 = 1,422.72 : x
2. Step 2: Convert to fraction form
   2,601.66/3,590.25 = 1,422.72/x
3. Step 3: Cross multiply
   2,601.66x = 3,590.25 × 1,422.72
4. Step 4: Simplify right side
   2,601.66x = 5,107,920.48
5. Step 5: Solve for x
   x = 5,107,920.48/2,601.66
6. Step 6: Final answer
   x = 1,963.33