Finding the Fourth Proportional to 3,111.01, 4,287.29 and 2,225.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.01 : 4,287.29 = 2,225.28 : x
2. Step 2: Convert to fraction form
   3,111.01/4,287.29 = 2,225.28/x
3. Step 3: Cross multiply
   3,111.01x = 4,287.29 × 2,225.28
4. Step 4: Simplify right side
   3,111.01x = 9,540,401.83
5. Step 5: Solve for x
   x = 9,540,401.83/3,111.01
6. Step 6: Final answer
   x = 3,066.66