Finding the Fourth Proportional to 2,850.58, 4,276.42 and 1,290.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,850.58 : 4,276.42 = 1,290.62 : x
2. Step 2: Convert to fraction form
   2,850.58/4,276.42 = 1,290.62/x
3. Step 3: Cross multiply
   2,850.58x = 4,276.42 × 1,290.62
4. Step 4: Simplify right side
   2,850.58x = 5,519,233.18
5. Step 5: Solve for x
   x = 5,519,233.18/2,850.58
6. Step 6: Final answer
   x = 1,936.18