Finding the Fourth Proportional to 2,556.63, 3,531.60 and 2,258.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.63 : 3,531.60 = 2,258.34 : x
2. Step 2: Convert to fraction form
   2,556.63/3,531.60 = 2,258.34/x
3. Step 3: Cross multiply
   2,556.63x = 3,531.60 × 2,258.34
4. Step 4: Simplify right side
   2,556.63x = 7,975,553.54
5. Step 5: Solve for x
   x = 7,975,553.54/2,556.63
6. Step 6: Final answer
   x = 3,119.56