Finding the Fourth Proportional to 2,183.82, 3,274.90 and 1,087.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,183.82 : 3,274.90 = 1,087.60 : x
2. Step 2: Convert to fraction form
   2,183.82/3,274.90 = 1,087.60/x
3. Step 3: Cross multiply
   2,183.82x = 3,274.90 × 1,087.60
4. Step 4: Simplify right side
   2,183.82x = 3,561,781.24
5. Step 5: Solve for x
   x = 3,561,781.24/2,183.82
6. Step 6: Final answer
   x = 1,630.99