Finding the Fourth Proportional to 2,303.27, 3,178.57 and 1,255.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,303.27 : 3,178.57 = 1,255.40 : x
2. Step 2: Convert to fraction form
   2,303.27/3,178.57 = 1,255.40/x
3. Step 3: Cross multiply
   2,303.27x = 3,178.57 × 1,255.40
4. Step 4: Simplify right side
   2,303.27x = 3,990,357.75
5. Step 5: Solve for x
   x = 3,990,357.75/2,303.27
6. Step 6: Final answer
   x = 1,732.48