Finding the Fourth Proportional to 2,554.83, 3,831.77 and 911.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,554.83 : 3,831.77 = 911.37 : x
2. Step 2: Convert to fraction form
   2,554.83/3,831.77 = 911.37/x
3. Step 3: Cross multiply
   2,554.83x = 3,831.77 × 911.37
4. Step 4: Simplify right side
   2,554.83x = 3,492,155.67
5. Step 5: Solve for x
   x = 3,492,155.67/2,554.83
6. Step 6: Final answer
   x = 1,366.88