Finding the Fourth Proportional to 2,574.24, 3,858.48 and 1,111.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,574.24 : 3,858.48 = 1,111.20 : x
2. Step 2: Convert to fraction form
   2,574.24/3,858.48 = 1,111.20/x
3. Step 3: Cross multiply
   2,574.24x = 3,858.48 × 1,111.20
4. Step 4: Simplify right side
   2,574.24x = 4,287,542.98
5. Step 5: Solve for x
   x = 4,287,542.98/2,574.24
6. Step 6: Final answer
   x = 1,665.56