Finding the Fourth Proportional to 2,328.02, 3,212.77 and 1,280.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.02 : 3,212.77 = 1,280.12 : x
2. Step 2: Convert to fraction form
   2,328.02/3,212.77 = 1,280.12/x
3. Step 3: Cross multiply
   2,328.02x = 3,212.77 × 1,280.12
4. Step 4: Simplify right side
   2,328.02x = 4,112,731.13
5. Step 5: Solve for x
   x = 4,112,731.13/2,328.02
6. Step 6: Final answer
   x = 1,766.62