Finding the Fourth Proportional to 3,663.76, 5,495.28 and 1,066.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.76 : 5,495.28 = 1,066.72 : x
2. Step 2: Convert to fraction form
   3,663.76/5,495.28 = 1,066.72/x
3. Step 3: Cross multiply
   3,663.76x = 5,495.28 × 1,066.72
4. Step 4: Simplify right side
   3,663.76x = 5,861,925.08
5. Step 5: Solve for x
   x = 5,861,925.08/3,663.76
6. Step 6: Final answer
   x = 1,599.98