Finding the Fourth Proportional to 1,002.38, 1,503.83 and 353.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.38 : 1,503.83 = 353.09 : x
2. Step 2: Convert to fraction form
   1,002.38/1,503.83 = 353.09/x
3. Step 3: Cross multiply
   1,002.38x = 1,503.83 × 353.09
4. Step 4: Simplify right side
   1,002.38x = 530,991.98
5. Step 5: Solve for x
   x = 530,991.98/1,002.38
6. Step 6: Final answer
   x = 529.73