Finding the Fourth Proportional to 2,636.88, 3,956.04 and 905.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.88 : 3,956.04 = 905.52 : x
2. Step 2: Convert to fraction form
   2,636.88/3,956.04 = 905.52/x
3. Step 3: Cross multiply
   2,636.88x = 3,956.04 × 905.52
4. Step 4: Simplify right side
   2,636.88x = 3,582,273.34
5. Step 5: Solve for x
   x = 3,582,273.34/2,636.88
6. Step 6: Final answer
   x = 1,358.53