Finding the Fourth Proportional to 2,851.16, 3,930.81 and 2,559.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.16 : 3,930.81 = 2,559.56 : x
2. Step 2: Convert to fraction form
   2,851.16/3,930.81 = 2,559.56/x
3. Step 3: Cross multiply
   2,851.16x = 3,930.81 × 2,559.56
4. Step 4: Simplify right side
   2,851.16x = 10,061,144.04
5. Step 5: Solve for x
   x = 10,061,144.04/2,851.16
6. Step 6: Final answer
   x = 3,528.79