Finding the Fourth Proportional to 2,340.56, 3,508.67 and 880.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340.56 : 3,508.67 = 880.68 : x
2. Step 2: Convert to fraction form
   2,340.56/3,508.67 = 880.68/x
3. Step 3: Cross multiply
   2,340.56x = 3,508.67 × 880.68
4. Step 4: Simplify right side
   2,340.56x = 3,090,015.50
5. Step 5: Solve for x
   x = 3,090,015.50/2,340.56
6. Step 6: Final answer
   x = 1,320.20