Finding the Fourth Proportional to 2,212.06, 3,052.47 and 1,280.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.06 : 3,052.47 = 1,280.38 : x
2. Step 2: Convert to fraction form
   2,212.06/3,052.47 = 1,280.38/x
3. Step 3: Cross multiply
   2,212.06x = 3,052.47 × 1,280.38
4. Step 4: Simplify right side
   2,212.06x = 3,908,321.54
5. Step 5: Solve for x
   x = 3,908,321.54/2,212.06
6. Step 6: Final answer
   x = 1,766.82