Finding the Fourth Proportional to 2,871.82, 4,308.18 and 1,228.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,871.82 : 4,308.18 = 1,228.38 : x
2. Step 2: Convert to fraction form
   2,871.82/4,308.18 = 1,228.38/x
3. Step 3: Cross multiply
   2,871.82x = 4,308.18 × 1,228.38
4. Step 4: Simplify right side
   2,871.82x = 5,292,082.15
5. Step 5: Solve for x
   x = 5,292,082.15/2,871.82
6. Step 6: Final answer
   x = 1,842.76