Finding the Fourth Proportional to 2,815.08, 3,915.83 and 2,761.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,815.08 : 3,915.83 = 2,761.62 : x
2. Step 2: Convert to fraction form
   2,815.08/3,915.83 = 2,761.62/x
3. Step 3: Cross multiply
   2,815.08x = 3,915.83 × 2,761.62
4. Step 4: Simplify right side
   2,815.08x = 10,814,034.44
5. Step 5: Solve for x
   x = 10,814,034.44/2,815.08
6. Step 6: Final answer
   x = 3,841.47