Finding the Fourth Proportional to 2,617.88, 3,612.57 and 1,422.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.88 : 3,612.57 = 1,422.81 : x
2. Step 2: Convert to fraction form
   2,617.88/3,612.57 = 1,422.81/x
3. Step 3: Cross multiply
   2,617.88x = 3,612.57 × 1,422.81
4. Step 4: Simplify right side
   2,617.88x = 5,140,000.72
5. Step 5: Solve for x
   x = 5,140,000.72/2,617.88
6. Step 6: Final answer
   x = 1,963.42