Finding the Fourth Proportional to 1,008.38, 1,513.18 and 460.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.38 : 1,513.18 = 460.82 : x
2. Step 2: Convert to fraction form
   1,008.38/1,513.18 = 460.82/x
3. Step 3: Cross multiply
   1,008.38x = 1,513.18 × 460.82
4. Step 4: Simplify right side
   1,008.38x = 697,303.61
5. Step 5: Solve for x
   x = 697,303.61/1,008.38
6. Step 6: Final answer
   x = 691.51