Finding the Fourth Proportional to 2,556.48, 3,520.71 and 1,995.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.48 : 3,520.71 = 1,995.96 : x
2. Step 2: Convert to fraction form
   2,556.48/3,520.71 = 1,995.96/x
3. Step 3: Cross multiply
   2,556.48x = 3,520.71 × 1,995.96
4. Step 4: Simplify right side
   2,556.48x = 7,027,196.33
5. Step 5: Solve for x
   x = 7,027,196.33/2,556.48
6. Step 6: Final answer
   x = 2,748.78