Finding the Fourth Proportional to 2,212.56, 3,053.04 and 1,280.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.56 : 3,053.04 = 1,280.88 : x
2. Step 2: Convert to fraction form
   2,212.56/3,053.04 = 1,280.88/x
3. Step 3: Cross multiply
   2,212.56x = 3,053.04 × 1,280.88
4. Step 4: Simplify right side
   2,212.56x = 3,910,577.88
5. Step 5: Solve for x
   x = 3,910,577.88/2,212.56
6. Step 6: Final answer
   x = 1,767.44