Finding the Fourth Proportional to 2,304.91, 3,456.69 and 917.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,304.91 : 3,456.69 = 917.79 : x
2. Step 2: Convert to fraction form
   2,304.91/3,456.69 = 917.79/x
3. Step 3: Cross multiply
   2,304.91x = 3,456.69 × 917.79
4. Step 4: Simplify right side
   2,304.91x = 3,172,515.52
5. Step 5: Solve for x
   x = 3,172,515.52/2,304.91
6. Step 6: Final answer
   x = 1,376.42