Finding the Fourth Proportional to 2,636.24, 3,954.72 and 994.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.24 : 3,954.72 = 994.88 : x
2. Step 2: Convert to fraction form
   2,636.24/3,954.72 = 994.88/x
3. Step 3: Cross multiply
   2,636.24x = 3,954.72 × 994.88
4. Step 4: Simplify right side
   2,636.24x = 3,934,471.83
5. Step 5: Solve for x
   x = 3,934,471.83/2,636.24
6. Step 6: Final answer
   x = 1,492.46