Finding the Fourth Proportional to 1,039.52, 1,434.50 and 573.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.52 : 1,434.50 = 573.76 : x
2. Step 2: Convert to fraction form
   1,039.52/1,434.50 = 573.76/x
3. Step 3: Cross multiply
   1,039.52x = 1,434.50 × 573.76
4. Step 4: Simplify right side
   1,039.52x = 823,058.72
5. Step 5: Solve for x
   x = 823,058.72/1,039.52
6. Step 6: Final answer
   x = 791.77