Finding the Fourth Proportional to 2,601.81, 3,590.50 and 1,422.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.81 : 3,590.50 = 1,422.88 : x
2. Step 2: Convert to fraction form
   2,601.81/3,590.50 = 1,422.88/x
3. Step 3: Cross multiply
   2,601.81x = 3,590.50 × 1,422.88
4. Step 4: Simplify right side
   2,601.81x = 5,108,840.82
5. Step 5: Solve for x
   x = 5,108,840.82/2,601.81
6. Step 6: Final answer
   x = 1,963.57