Finding the Fourth Proportional to 2,679.47, 4,019.30 and 731.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,679.47 : 4,019.30 = 731.69 : x
2. Step 2: Convert to fraction form
   2,679.47/4,019.30 = 731.69/x
3. Step 3: Cross multiply
   2,679.47x = 4,019.30 × 731.69
4. Step 4: Simplify right side
   2,679.47x = 2,940,881.62
5. Step 5: Solve for x
   x = 2,940,881.62/2,679.47
6. Step 6: Final answer
   x = 1,097.56