Finding the Fourth Proportional to 2,855.69, 4,271.70 and 2,680.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,855.69 : 4,271.70 = 2,680.73 : x
2. Step 2: Convert to fraction form
   2,855.69/4,271.70 = 2,680.73/x
3. Step 3: Cross multiply
   2,855.69x = 4,271.70 × 2,680.73
4. Step 4: Simplify right side
   2,855.69x = 11,451,280.46
5. Step 5: Solve for x
   x = 11,451,280.46/2,855.69
6. Step 6: Final answer
   x = 4,009.98