Finding the Fourth Proportional to 2,328.18, 3,212.93 and 1,280.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.18 : 3,212.93 = 1,280.24 : x
2. Step 2: Convert to fraction form
   2,328.18/3,212.93 = 1,280.24/x
3. Step 3: Cross multiply
   2,328.18x = 3,212.93 × 1,280.24
4. Step 4: Simplify right side
   2,328.18x = 4,113,321.50
5. Step 5: Solve for x
   x = 4,113,321.50/2,328.18
6. Step 6: Final answer
   x = 1,766.75