Finding the Fourth Proportional to 1,002.42, 1,383.30 and 609.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.42 : 1,383.30 = 609.48 : x
2. Step 2: Convert to fraction form
   1,002.42/1,383.30 = 609.48/x
3. Step 3: Cross multiply
   1,002.42x = 1,383.30 × 609.48
4. Step 4: Simplify right side
   1,002.42x = 843,093.68
5. Step 5: Solve for x
   x = 843,093.68/1,002.42
6. Step 6: Final answer
   x = 841.06