Finding the Fourth Proportional to 2,057.75, 3,083.52 and 1,235.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.75 : 3,083.52 = 1,235.12 : x
2. Step 2: Convert to fraction form
   2,057.75/3,083.52 = 1,235.12/x
3. Step 3: Cross multiply
   2,057.75x = 3,083.52 × 1,235.12
4. Step 4: Simplify right side
   2,057.75x = 3,808,517.22
5. Step 5: Solve for x
   x = 3,808,517.22/2,057.75
6. Step 6: Final answer
   x = 1,850.82