Finding the Fourth Proportional to 2,556.09, 3,833.33 and 1,257.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.09 : 3,833.33 = 1,257.39 : x
2. Step 2: Convert to fraction form
   2,556.09/3,833.33 = 1,257.39/x
3. Step 3: Cross multiply
   2,556.09x = 3,833.33 × 1,257.39
4. Step 4: Simplify right side
   2,556.09x = 4,819,984.52
5. Step 5: Solve for x
   x = 4,819,984.52/2,556.09
6. Step 6: Final answer
   x = 1,885.69