Finding the Fourth Proportional to 830.43, 1,145.69 and 535.59

Step by Step Solution

1. Step 1: Write the proportion equation
   830.43 : 1,145.69 = 535.59 : x
2. Step 2: Convert to fraction form
   830.43/1,145.69 = 535.59/x
3. Step 3: Cross multiply
   830.43x = 1,145.69 × 535.59
4. Step 4: Simplify right side
   830.43x = 613,617.43
5. Step 5: Solve for x
   x = 613,617.43/830.43
6. Step 6: Final answer
   x = 738.92