Finding the Fourth Proportional to 1,039.63, 1,434.72 and 573.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.63 : 1,434.72 = 573.88 : x
2. Step 2: Convert to fraction form
   1,039.63/1,434.72 = 573.88/x
3. Step 3: Cross multiply
   1,039.63x = 1,434.72 × 573.88
4. Step 4: Simplify right side
   1,039.63x = 823,349.94
5. Step 5: Solve for x
   x = 823,349.94/1,039.63
6. Step 6: Final answer
   x = 791.97