Finding the Fourth Proportional to 3,105.33, 4,286.69 and 2,219.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.33 : 4,286.69 = 2,219.59 : x
2. Step 2: Convert to fraction form
   3,105.33/4,286.69 = 2,219.59/x
3. Step 3: Cross multiply
   3,105.33x = 4,286.69 × 2,219.59
4. Step 4: Simplify right side
   3,105.33x = 9,514,694.26
5. Step 5: Solve for x
   x = 9,514,694.26/3,105.33
6. Step 6: Final answer
   x = 3,063.99