Finding the Fourth Proportional to 2,754.38, 4,131.77 and 905.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,754.38 : 4,131.77 = 905.42 : x
2. Step 2: Convert to fraction form
   2,754.38/4,131.77 = 905.42/x
3. Step 3: Cross multiply
   2,754.38x = 4,131.77 × 905.42
4. Step 4: Simplify right side
   2,754.38x = 3,740,962.01
5. Step 5: Solve for x
   x = 3,740,962.01/2,754.38
6. Step 6: Final answer
   x = 1,358.19