Finding the Fourth Proportional to 2,601.66, 3,590.31 and 1,422.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.66 : 3,590.31 = 1,422.76 : x
2. Step 2: Convert to fraction form
   2,601.66/3,590.31 = 1,422.76/x
3. Step 3: Cross multiply
   2,601.66x = 3,590.31 × 1,422.76
4. Step 4: Simplify right side
   2,601.66x = 5,108,145.90
5. Step 5: Solve for x
   x = 5,108,145.90/2,601.66
6. Step 6: Final answer
   x = 1,963.42