Finding the Fourth Proportional to 2,843.40, 4,265.37 and 1,200.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,843.40 : 4,265.37 = 1,200.09 : x
2. Step 2: Convert to fraction form
   2,843.40/4,265.37 = 1,200.09/x
3. Step 3: Cross multiply
   2,843.40x = 4,265.37 × 1,200.09
4. Step 4: Simplify right side
   2,843.40x = 5,118,827.88
5. Step 5: Solve for x
   x = 5,118,827.88/2,843.40
6. Step 6: Final answer
   x = 1,800.25