Finding the Fourth Proportional to 1,178.69, 1,766.82 and 529.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.69 : 1,766.82 = 529.61 : x
2. Step 2: Convert to fraction form
   1,178.69/1,766.82 = 529.61/x
3. Step 3: Cross multiply
   1,178.69x = 1,766.82 × 529.61
4. Step 4: Simplify right side
   1,178.69x = 935,725.54
5. Step 5: Solve for x
   x = 935,725.54/1,178.69
6. Step 6: Final answer
   x = 793.87