Finding the Fourth Proportional to 2,819.33, 4,229.41 and 871.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.33 : 4,229.41 = 871.69 : x
2. Step 2: Convert to fraction form
   2,819.33/4,229.41 = 871.69/x
3. Step 3: Cross multiply
   2,819.33x = 4,229.41 × 871.69
4. Step 4: Simplify right side
   2,819.33x = 3,686,719.47
5. Step 5: Solve for x
   x = 3,686,719.47/2,819.33
6. Step 6: Final answer
   x = 1,307.66