Finding the Fourth Proportional to 3,551.56, 5,327.82 and 1,086.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,551.56 : 5,327.82 = 1,086.55 : x
2. Step 2: Convert to fraction form
   3,551.56/5,327.82 = 1,086.55/x
3. Step 3: Cross multiply
   3,551.56x = 5,327.82 × 1,086.55
4. Step 4: Simplify right side
   3,551.56x = 5,788,942.82
5. Step 5: Solve for x
   x = 5,788,942.82/3,551.56
6. Step 6: Final answer
   x = 1,629.97