Finding the Fourth Proportional to 2,760.72, 3,785.42 and 2,678.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.72 : 3,785.42 = 2,678.73 : x
2. Step 2: Convert to fraction form
   2,760.72/3,785.42 = 2,678.73/x
3. Step 3: Cross multiply
   2,760.72x = 3,785.42 × 2,678.73
4. Step 4: Simplify right side
   2,760.72x = 10,140,104.72
5. Step 5: Solve for x
   x = 10,140,104.72/2,760.72
6. Step 6: Final answer
   x = 3,672.99