Finding the Fourth Proportional to 2,573.51, 3,859.12 and 818.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.51 : 3,859.12 = 818.19 : x
2. Step 2: Convert to fraction form
   2,573.51/3,859.12 = 818.19/x
3. Step 3: Cross multiply
   2,573.51x = 3,859.12 × 818.19
4. Step 4: Simplify right side
   2,573.51x = 3,157,493.39
5. Step 5: Solve for x
   x = 3,157,493.39/2,573.51
6. Step 6: Final answer
   x = 1,226.92