Finding the Fourth Proportional to 2,754.27, 4,131 and 905.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,754.27 : 4,131 = 905.31 : x
2. Step 2: Convert to fraction form
   2,754.27/4,131 = 905.31/x
3. Step 3: Cross multiply
   2,754.27x = 4,131 × 905.31
4. Step 4: Simplify right side
   2,754.27x = 3,739,835.61
5. Step 5: Solve for x
   x = 3,739,835.61/2,754.27
6. Step 6: Final answer
   x = 1,357.83