Finding the Fourth Proportional to 2,843.88, 4,266.40 and 1,200.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,843.88 : 4,266.40 = 1,200.42 : x
2. Step 2: Convert to fraction form
   2,843.88/4,266.40 = 1,200.42/x
3. Step 3: Cross multiply
   2,843.88x = 4,266.40 × 1,200.42
4. Step 4: Simplify right side
   2,843.88x = 5,121,471.89
5. Step 5: Solve for x
   x = 5,121,471.89/2,843.88
6. Step 6: Final answer
   x = 1,800.87