Finding the Fourth Proportional to 1,002.72, 1,383.67 and 604.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.72 : 1,383.67 = 604.45 : x
2. Step 2: Convert to fraction form
   1,002.72/1,383.67 = 604.45/x
3. Step 3: Cross multiply
   1,002.72x = 1,383.67 × 604.45
4. Step 4: Simplify right side
   1,002.72x = 836,359.33
5. Step 5: Solve for x
   x = 836,359.33/1,002.72
6. Step 6: Final answer
   x = 834.09