Finding the Fourth Proportional to 3,815.91, 5,714.15 and 1,863

Step by Step Solution

1. Step 1: Write the proportion equation
   3,815.91 : 5,714.15 = 1,863 : x
2. Step 2: Convert to fraction form
   3,815.91/5,714.15 = 1,863/x
3. Step 3: Cross multiply
   3,815.91x = 5,714.15 × 1,863
4. Step 4: Simplify right side
   3,815.91x = 10,645,452.14
5. Step 5: Solve for x
   x = 10,645,452.14/3,815.91
6. Step 6: Final answer
   x = 2,789.75