Finding the Fourth Proportional to 1,049.33, 1,573.73 and 318.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.33 : 1,573.73 = 318.71 : x
2. Step 2: Convert to fraction form
   1,049.33/1,573.73 = 318.71/x
3. Step 3: Cross multiply
   1,049.33x = 1,573.73 × 318.71
4. Step 4: Simplify right side
   1,049.33x = 501,567.02
5. Step 5: Solve for x
   x = 501,567.02/1,049.33
6. Step 6: Final answer
   x = 477.99