Finding the Fourth Proportional to 2,806.88, 3,871.49 and 2,384.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,806.88 : 3,871.49 = 2,384.30 : x
2. Step 2: Convert to fraction form
   2,806.88/3,871.49 = 2,384.30/x
3. Step 3: Cross multiply
   2,806.88x = 3,871.49 × 2,384.30
4. Step 4: Simplify right side
   2,806.88x = 9,230,762.33
5. Step 5: Solve for x
   x = 9,230,762.33/2,806.88
6. Step 6: Final answer
   x = 3,288.63