Finding the Fourth Proportional to 1,039.17, 1,434.06 and 573.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.17 : 1,434.06 = 573.42 : x
2. Step 2: Convert to fraction form
   1,039.17/1,434.06 = 573.42/x
3. Step 3: Cross multiply
   1,039.17x = 1,434.06 × 573.42
4. Step 4: Simplify right side
   1,039.17x = 822,318.69
5. Step 5: Solve for x
   x = 822,318.69/1,039.17
6. Step 6: Final answer
   x = 791.32