Finding the Fourth Proportional to 1,002.34, 1,383.25 and 609.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.34 : 1,383.25 = 609.32 : x
2. Step 2: Convert to fraction form
   1,002.34/1,383.25 = 609.32/x
3. Step 3: Cross multiply
   1,002.34x = 1,383.25 × 609.32
4. Step 4: Simplify right side
   1,002.34x = 842,841.89
5. Step 5: Solve for x
   x = 842,841.89/1,002.34
6. Step 6: Final answer
   x = 840.87