Finding the Fourth Proportional to 934.59, 1,401.89 and 285.33

Step by Step Solution

1. Step 1: Write the proportion equation
   934.59 : 1,401.89 = 285.33 : x
2. Step 2: Convert to fraction form
   934.59/1,401.89 = 285.33/x
3. Step 3: Cross multiply
   934.59x = 1,401.89 × 285.33
4. Step 4: Simplify right side
   934.59x = 399,998.82
5. Step 5: Solve for x
   x = 399,998.82/934.59
6. Step 6: Final answer
   x = 427.99