Finding the Fourth Proportional to 1,039.16, 1,434.06 and 573.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.16 : 1,434.06 = 573.41 : x
2. Step 2: Convert to fraction form
   1,039.16/1,434.06 = 573.41/x
3. Step 3: Cross multiply
   1,039.16x = 1,434.06 × 573.41
4. Step 4: Simplify right side
   1,039.16x = 822,294.31
5. Step 5: Solve for x
   x = 822,294.31/1,039.16
6. Step 6: Final answer
   x = 791.31