Finding the Fourth Proportional to 2,850.43, 4,274.38 and 1,290.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,850.43 : 4,274.38 = 1,290.37 : x
2. Step 2: Convert to fraction form
   2,850.43/4,274.38 = 1,290.37/x
3. Step 3: Cross multiply
   2,850.43x = 4,274.38 × 1,290.37
4. Step 4: Simplify right side
   2,850.43x = 5,515,531.72
5. Step 5: Solve for x
   x = 5,515,531.72/2,850.43
6. Step 6: Final answer
   x = 1,934.98