Finding the Fourth Proportional to 2,583.40, 3,561.22 and 2,227.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,583.40 : 3,561.22 = 2,227.72 : x
2. Step 2: Convert to fraction form
   2,583.40/3,561.22 = 2,227.72/x
3. Step 3: Cross multiply
   2,583.40x = 3,561.22 × 2,227.72
4. Step 4: Simplify right side
   2,583.40x = 7,933,401.02
5. Step 5: Solve for x
   x = 7,933,401.02/2,583.40
6. Step 6: Final answer
   x = 3,070.91