Finding the Fourth Proportional to 2,328.24, 3,212.72 and 1,280.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.24 : 3,212.72 = 1,280.24 : x
2. Step 2: Convert to fraction form
   2,328.24/3,212.72 = 1,280.24/x
3. Step 3: Cross multiply
   2,328.24x = 3,212.72 × 1,280.24
4. Step 4: Simplify right side
   2,328.24x = 4,113,052.65
5. Step 5: Solve for x
   x = 4,113,052.65/2,328.24
6. Step 6: Final answer
   x = 1,766.59