Finding the Fourth Proportional to 2,556.29, 3,832.16 and 912.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.29 : 3,832.16 = 912.47 : x
2. Step 2: Convert to fraction form
   2,556.29/3,832.16 = 912.47/x
3. Step 3: Cross multiply
   2,556.29x = 3,832.16 × 912.47
4. Step 4: Simplify right side
   2,556.29x = 3,496,726.47
5. Step 5: Solve for x
   x = 3,496,726.47/2,556.29
6. Step 6: Final answer
   x = 1,367.89