Finding the Fourth Proportional to 2,323.30, 3,485.16 and 680.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,323.30 : 3,485.16 = 680.02 : x
2. Step 2: Convert to fraction form
   2,323.30/3,485.16 = 680.02/x
3. Step 3: Cross multiply
   2,323.30x = 3,485.16 × 680.02
4. Step 4: Simplify right side
   2,323.30x = 2,369,978.50
5. Step 5: Solve for x
   x = 2,369,978.50/2,323.30
6. Step 6: Final answer
   x = 1,020.09