Finding the Fourth Proportional to 2,323.74, 3,486.15 and 680.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,323.74 : 3,486.15 = 680.31 : x
2. Step 2: Convert to fraction form
   2,323.74/3,486.15 = 680.31/x
3. Step 3: Cross multiply
   2,323.74x = 3,486.15 × 680.31
4. Step 4: Simplify right side
   2,323.74x = 2,371,662.71
5. Step 5: Solve for x
   x = 2,371,662.71/2,323.74
6. Step 6: Final answer
   x = 1,020.62