Finding the Fourth Proportional to 2,185.82, 3,276.90 and 888.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.82 : 3,276.90 = 888.20 : x
2. Step 2: Convert to fraction form
   2,185.82/3,276.90 = 888.20/x
3. Step 3: Cross multiply
   2,185.82x = 3,276.90 × 888.20
4. Step 4: Simplify right side
   2,185.82x = 2,910,542.58
5. Step 5: Solve for x
   x = 2,910,542.58/2,185.82
6. Step 6: Final answer
   x = 1,331.56