Finding the Fourth Proportional to 2,057.10, 3,085.59 and 740.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.10 : 3,085.59 = 740.85 : x
2. Step 2: Convert to fraction form
   2,057.10/3,085.59 = 740.85/x
3. Step 3: Cross multiply
   2,057.10x = 3,085.59 × 740.85
4. Step 4: Simplify right side
   2,057.10x = 2,285,950.56
5. Step 5: Solve for x
   x = 2,285,950.56/2,057.10
6. Step 6: Final answer
   x = 1,111.25