Finding the Fourth Proportional to 2,323.56, 3,485.88 and 680.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,323.56 : 3,485.88 = 680.10 : x
2. Step 2: Convert to fraction form
   2,323.56/3,485.88 = 680.10/x
3. Step 3: Cross multiply
   2,323.56x = 3,485.88 × 680.10
4. Step 4: Simplify right side
   2,323.56x = 2,370,746.99
5. Step 5: Solve for x
   x = 2,370,746.99/2,323.56
6. Step 6: Final answer
   x = 1,020.31