Finding the Fourth Proportional to 2,255.70, 3,111.12 and 1,509.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.70 : 3,111.12 = 1,509.42 : x
2. Step 2: Convert to fraction form
   2,255.70/3,111.12 = 1,509.42/x
3. Step 3: Cross multiply
   2,255.70x = 3,111.12 × 1,509.42
4. Step 4: Simplify right side
   2,255.70x = 4,695,986.75
5. Step 5: Solve for x
   x = 4,695,986.75/2,255.70
6. Step 6: Final answer
   x = 2,081.83