Finding the Fourth Proportional to 929.82, 1,393.89 and 353.10

Step by Step Solution

1. Step 1: Write the proportion equation
   929.82 : 1,393.89 = 353.10 : x
2. Step 2: Convert to fraction form
   929.82/1,393.89 = 353.10/x
3. Step 3: Cross multiply
   929.82x = 1,393.89 × 353.10
4. Step 4: Simplify right side
   929.82x = 492,175.59
5. Step 5: Solve for x
   x = 492,175.59/929.82
6. Step 6: Final answer
   x = 529.33