Finding the Fourth Proportional to 2,556.24, 3,833.16 and 912.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.24 : 3,833.16 = 912.12 : x
2. Step 2: Convert to fraction form
   2,556.24/3,833.16 = 912.12/x
3. Step 3: Cross multiply
   2,556.24x = 3,833.16 × 912.12
4. Step 4: Simplify right side
   2,556.24x = 3,496,301.90
5. Step 5: Solve for x
   x = 3,496,301.90/2,556.24
6. Step 6: Final answer
   x = 1,367.75