Finding the Fourth Proportional to 1,049.78, 1,448.71 and 657.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.78 : 1,448.71 = 657.04 : x
2. Step 2: Convert to fraction form
   1,049.78/1,448.71 = 657.04/x
3. Step 3: Cross multiply
   1,049.78x = 1,448.71 × 657.04
4. Step 4: Simplify right side
   1,049.78x = 951,860.42
5. Step 5: Solve for x
   x = 951,860.42/1,049.78
6. Step 6: Final answer
   x = 906.72