Finding the Fourth Proportional to 2,815.98, 4,223.82 and 1,255.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,815.98 : 4,223.82 = 1,255.02 : x
2. Step 2: Convert to fraction form
   2,815.98/4,223.82 = 1,255.02/x
3. Step 3: Cross multiply
   2,815.98x = 4,223.82 × 1,255.02
4. Step 4: Simplify right side
   2,815.98x = 5,300,978.58
5. Step 5: Solve for x
   x = 5,300,978.58/2,815.98
6. Step 6: Final answer
   x = 1,882.46