Finding the Fourth Proportional to 2,550.78, 3,520.56 and 1,556.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.78 : 3,520.56 = 1,556.94 : x
2. Step 2: Convert to fraction form
   2,550.78/3,520.56 = 1,556.94/x
3. Step 3: Cross multiply
   2,550.78x = 3,520.56 × 1,556.94
4. Step 4: Simplify right side
   2,550.78x = 5,481,300.69
5. Step 5: Solve for x
   x = 5,481,300.69/2,550.78
6. Step 6: Final answer
   x = 2,148.87