Finding the Fourth Proportional to 2,554.56, 3,832.16 and 911.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,554.56 : 3,832.16 = 911.28 : x
2. Step 2: Convert to fraction form
   2,554.56/3,832.16 = 911.28/x
3. Step 3: Cross multiply
   2,554.56x = 3,832.16 × 911.28
4. Step 4: Simplify right side
   2,554.56x = 3,492,166.21
5. Step 5: Solve for x
   x = 3,492,166.21/2,554.56
6. Step 6: Final answer
   x = 1,367.03