Finding the Fourth Proportional to 2,211.52, 3,052.46 and 1,280.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.52 : 3,052.46 = 1,280.56 : x
2. Step 2: Convert to fraction form
   2,211.52/3,052.46 = 1,280.56/x
3. Step 3: Cross multiply
   2,211.52x = 3,052.46 × 1,280.56
4. Step 4: Simplify right side
   2,211.52x = 3,908,858.18
5. Step 5: Solve for x
   x = 3,908,858.18/2,211.52
6. Step 6: Final answer
   x = 1,767.50