Finding the Fourth Proportional to 2,570.24, 3,851.52 and 2,111.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.24 : 3,851.52 = 2,111.28 : x
2. Step 2: Convert to fraction form
   2,570.24/3,851.52 = 2,111.28/x
3. Step 3: Cross multiply
   2,570.24x = 3,851.52 × 2,111.28
4. Step 4: Simplify right side
   2,570.24x = 8,131,637.15
5. Step 5: Solve for x
   x = 8,131,637.15/2,570.24
6. Step 6: Final answer
   x = 3,163.77