Finding the Fourth Proportional to 2,418.75, 3,627.41 and 1,638.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,418.75 : 3,627.41 = 1,638.27 : x
2. Step 2: Convert to fraction form
   2,418.75/3,627.41 = 1,638.27/x
3. Step 3: Cross multiply
   2,418.75x = 3,627.41 × 1,638.27
4. Step 4: Simplify right side
   2,418.75x = 5,942,668.79
5. Step 5: Solve for x
   x = 5,942,668.79/2,418.75
6. Step 6: Final answer
   x = 2,456.92