Finding the Fourth Proportional to 2,556.42, 3,833.61 and 996.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.42 : 3,833.61 = 996.21 : x
2. Step 2: Convert to fraction form
   2,556.42/3,833.61 = 996.21/x
3. Step 3: Cross multiply
   2,556.42x = 3,833.61 × 996.21
4. Step 4: Simplify right side
   2,556.42x = 3,819,061.52
5. Step 5: Solve for x
   x = 3,819,061.52/2,556.42
6. Step 6: Final answer
   x = 1,493.91