Finding the Fourth Proportional to 2,871.18, 4,306.96 and 1,227.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,871.18 : 4,306.96 = 1,227.72 : x
2. Step 2: Convert to fraction form
   2,871.18/4,306.96 = 1,227.72/x
3. Step 3: Cross multiply
   2,871.18x = 4,306.96 × 1,227.72
4. Step 4: Simplify right side
   2,871.18x = 5,287,740.93
5. Step 5: Solve for x
   x = 5,287,740.93/2,871.18
6. Step 6: Final answer
   x = 1,841.66