Finding the Fourth Proportional to 2,850.57, 4,274.42 and 1,118.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,850.57 : 4,274.42 = 1,118.25 : x
2. Step 2: Convert to fraction form
   2,850.57/4,274.42 = 1,118.25/x
3. Step 3: Cross multiply
   2,850.57x = 4,274.42 × 1,118.25
4. Step 4: Simplify right side
   2,850.57x = 4,779,864.57
5. Step 5: Solve for x
   x = 4,779,864.57/2,850.57
6. Step 6: Final answer
   x = 1,676.81