Finding the Fourth Proportional to 2,180.15, 3,268.89 and 880.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.15 : 3,268.89 = 880.10 : x
2. Step 2: Convert to fraction form
   2,180.15/3,268.89 = 880.10/x
3. Step 3: Cross multiply
   2,180.15x = 3,268.89 × 880.10
4. Step 4: Simplify right side
   2,180.15x = 2,876,933.74
5. Step 5: Solve for x
   x = 2,876,933.74/2,180.15
6. Step 6: Final answer
   x = 1,319.61