Finding the Fourth Proportional to 3,663.56, 5,495.52 and 1,066.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.56 : 5,495.52 = 1,066.55 : x
2. Step 2: Convert to fraction form
   3,663.56/5,495.52 = 1,066.55/x
3. Step 3: Cross multiply
   3,663.56x = 5,495.52 × 1,066.55
4. Step 4: Simplify right side
   3,663.56x = 5,861,246.86
5. Step 5: Solve for x
   x = 5,861,246.86/3,663.56
6. Step 6: Final answer
   x = 1,599.88