Finding the Fourth Proportional to 2,806.52, 3,873.84 and 2,667.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,806.52 : 3,873.84 = 2,667.20 : x
2. Step 2: Convert to fraction form
   2,806.52/3,873.84 = 2,667.20/x
3. Step 3: Cross multiply
   2,806.52x = 3,873.84 × 2,667.20
4. Step 4: Simplify right side
   2,806.52x = 10,332,306.05
5. Step 5: Solve for x
   x = 10,332,306.05/2,806.52
6. Step 6: Final answer
   x = 3,681.54