Finding the Fourth Proportional to 2,753.94, 4,131.17 and 905.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,753.94 : 4,131.17 = 905.06 : x
2. Step 2: Convert to fraction form
   2,753.94/4,131.17 = 905.06/x
3. Step 3: Cross multiply
   2,753.94x = 4,131.17 × 905.06
4. Step 4: Simplify right side
   2,753.94x = 3,738,956.72
5. Step 5: Solve for x
   x = 3,738,956.72/2,753.94
6. Step 6: Final answer
   x = 1,357.68