Finding the Fourth Proportional to 2,608.58, 3,942.46 and 2,563.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.58 : 3,942.46 = 2,563.22 : x
2. Step 2: Convert to fraction form
   2,608.58/3,942.46 = 2,563.22/x
3. Step 3: Cross multiply
   2,608.58x = 3,942.46 × 2,563.22
4. Step 4: Simplify right side
   2,608.58x = 10,105,392.32
5. Step 5: Solve for x
   x = 10,105,392.32/2,608.58
6. Step 6: Final answer
   x = 3,873.91