Finding the Fourth Proportional to 3,111.04, 4,662.72 and 1,571.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.04 : 4,662.72 = 1,571.20 : x
2. Step 2: Convert to fraction form
   3,111.04/4,662.72 = 1,571.20/x
3. Step 3: Cross multiply
   3,111.04x = 4,662.72 × 1,571.20
4. Step 4: Simplify right side
   3,111.04x = 7,326,065.66
5. Step 5: Solve for x
   x = 7,326,065.66/3,111.04
6. Step 6: Final answer
   x = 2,354.86