Finding the Fourth Proportional to 3,663.45, 5,493.56 and 1,066.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.45 : 5,493.56 = 1,066.59 : x
2. Step 2: Convert to fraction form
   3,663.45/5,493.56 = 1,066.59/x
3. Step 3: Cross multiply
   3,663.45x = 5,493.56 × 1,066.59
4. Step 4: Simplify right side
   3,663.45x = 5,859,370.83
5. Step 5: Solve for x
   x = 5,859,370.83/3,663.45
6. Step 6: Final answer
   x = 1,599.41