Finding the Fourth Proportional to 3,666.47, 5,499.61 and 1,069.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.47 : 5,499.61 = 1,069.43 : x
2. Step 2: Convert to fraction form
   3,666.47/5,499.61 = 1,069.43/x
3. Step 3: Cross multiply
   3,666.47x = 5,499.61 × 1,069.43
4. Step 4: Simplify right side
   3,666.47x = 5,881,417.75
5. Step 5: Solve for x
   x = 5,881,417.75/3,666.47
6. Step 6: Final answer
   x = 1,604.11