Finding the Fourth Proportional to 3,663.46, 5,496.12 and 1,066.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.46 : 5,496.12 = 1,066.40 : x
2. Step 2: Convert to fraction form
   3,663.46/5,496.12 = 1,066.40/x
3. Step 3: Cross multiply
   3,663.46x = 5,496.12 × 1,066.40
4. Step 4: Simplify right side
   3,663.46x = 5,861,062.37
5. Step 5: Solve for x
   x = 5,861,062.37/3,663.46
6. Step 6: Final answer
   x = 1,599.87