Finding the Fourth Proportional to 1,002.38, 1,504.18 and 454.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.38 : 1,504.18 = 454.82 : x
2. Step 2: Convert to fraction form
   1,002.38/1,504.18 = 454.82/x
3. Step 3: Cross multiply
   1,002.38x = 1,504.18 × 454.82
4. Step 4: Simplify right side
   1,002.38x = 684,131.15
5. Step 5: Solve for x
   x = 684,131.15/1,002.38
6. Step 6: Final answer
   x = 682.51