Finding the Fourth Proportional to 1,118.33, 1,676.82 and 459.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.33 : 1,676.82 = 459.69 : x
2. Step 2: Convert to fraction form
   1,118.33/1,676.82 = 459.69/x
3. Step 3: Cross multiply
   1,118.33x = 1,676.82 × 459.69
4. Step 4: Simplify right side
   1,118.33x = 770,817.39
5. Step 5: Solve for x
   x = 770,817.39/1,118.33
6. Step 6: Final answer
   x = 689.26