Finding the Fourth Proportional to 3,663.72, 5,496.38 and 1,066.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.72 : 5,496.38 = 1,066.86 : x
2. Step 2: Convert to fraction form
   3,663.72/5,496.38 = 1,066.86/x
3. Step 3: Cross multiply
   3,663.72x = 5,496.38 × 1,066.86
4. Step 4: Simplify right side
   3,663.72x = 5,863,867.97
5. Step 5: Solve for x
   x = 5,863,867.97/3,663.72
6. Step 6: Final answer
   x = 1,600.52