Finding the Fourth Proportional to 1,105.43, 1,658.16 and 335.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.43 : 1,658.16 = 335.93 : x
2. Step 2: Convert to fraction form
   1,105.43/1,658.16 = 335.93/x
3. Step 3: Cross multiply
   1,105.43x = 1,658.16 × 335.93
4. Step 4: Simplify right side
   1,105.43x = 557,025.69
5. Step 5: Solve for x
   x = 557,025.69/1,105.43
6. Step 6: Final answer
   x = 503.90