Finding the Fourth Proportional to 1,039.75, 1,434.89 and 574.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.75 : 1,434.89 = 574.03 : x
2. Step 2: Convert to fraction form
   1,039.75/1,434.89 = 574.03/x
3. Step 3: Cross multiply
   1,039.75x = 1,434.89 × 574.03
4. Step 4: Simplify right side
   1,039.75x = 823,669.91
5. Step 5: Solve for x
   x = 823,669.91/1,039.75
6. Step 6: Final answer
   x = 792.18