Finding the Fourth Proportional to 2,617.45, 3,612.09 and 1,422.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.45 : 3,612.09 = 1,422.45 : x
2. Step 2: Convert to fraction form
   2,617.45/3,612.09 = 1,422.45/x
3. Step 3: Cross multiply
   2,617.45x = 3,612.09 × 1,422.45
4. Step 4: Simplify right side
   2,617.45x = 5,138,022.75
5. Step 5: Solve for x
   x = 5,138,022.75/2,617.45
6. Step 6: Final answer
   x = 1,962.99