Finding the Fourth Proportional to 1,039.25, 1,434.20 and 573.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.25 : 1,434.20 = 573.53 : x
2. Step 2: Convert to fraction form
   1,039.25/1,434.20 = 573.53/x
3. Step 3: Cross multiply
   1,039.25x = 1,434.20 × 573.53
4. Step 4: Simplify right side
   1,039.25x = 822,556.73
5. Step 5: Solve for x
   x = 822,556.73/1,039.25
6. Step 6: Final answer
   x = 791.49