Finding the Fourth Proportional to 2,573.27, 3,859.87 and 818.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.27 : 3,859.87 = 818.27 : x
2. Step 2: Convert to fraction form
   2,573.27/3,859.87 = 818.27/x
3. Step 3: Cross multiply
   2,573.27x = 3,859.87 × 818.27
4. Step 4: Simplify right side
   2,573.27x = 3,158,415.82
5. Step 5: Solve for x
   x = 3,158,415.82/2,573.27
6. Step 6: Final answer
   x = 1,227.39