Finding the Fourth Proportional to 2,556.35, 3,831.78 and 1,322.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.35 : 3,831.78 = 1,322.51 : x
2. Step 2: Convert to fraction form
   2,556.35/3,831.78 = 1,322.51/x
3. Step 3: Cross multiply
   2,556.35x = 3,831.78 × 1,322.51
4. Step 4: Simplify right side
   2,556.35x = 5,067,581.91
5. Step 5: Solve for x
   x = 5,067,581.91/2,556.35
6. Step 6: Final answer
   x = 1,982.35