Finding the Fourth Proportional to 2,178.96, 3,268.89 and 880.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.96 : 3,268.89 = 880.53 : x
2. Step 2: Convert to fraction form
   2,178.96/3,268.89 = 880.53/x
3. Step 3: Cross multiply
   2,178.96x = 3,268.89 × 880.53
4. Step 4: Simplify right side
   2,178.96x = 2,878,355.71
5. Step 5: Solve for x
   x = 2,878,355.71/2,178.96
6. Step 6: Final answer
   x = 1,320.98