Finding the Fourth Proportional to 3,682.72, 5,524.64 and 1,085.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,682.72 : 5,524.64 = 1,085.76 : x
2. Step 2: Convert to fraction form
   3,682.72/5,524.64 = 1,085.76/x
3. Step 3: Cross multiply
   3,682.72x = 5,524.64 × 1,085.76
4. Step 4: Simplify right side
   3,682.72x = 5,998,433.13
5. Step 5: Solve for x
   x = 5,998,433.13/3,682.72
6. Step 6: Final answer
   x = 1,628.81