Finding the Fourth Proportional to 2,229.70, 3,076.69 and 1,285.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,229.70 : 3,076.69 = 1,285.52 : x
2. Step 2: Convert to fraction form
   2,229.70/3,076.69 = 1,285.52/x
3. Step 3: Cross multiply
   2,229.70x = 3,076.69 × 1,285.52
4. Step 4: Simplify right side
   2,229.70x = 3,955,153.42
5. Step 5: Solve for x
   x = 3,955,153.42/2,229.70
6. Step 6: Final answer
   x = 1,773.85