Finding the Fourth Proportional to 3,666.09, 5,499.05 and 1,069.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.09 : 5,499.05 = 1,069.05 : x
2. Step 2: Convert to fraction form
   3,666.09/5,499.05 = 1,069.05/x
3. Step 3: Cross multiply
   3,666.09x = 5,499.05 × 1,069.05
4. Step 4: Simplify right side
   3,666.09x = 5,878,754.06
5. Step 5: Solve for x
   x = 5,878,754.06/3,666.09
6. Step 6: Final answer
   x = 1,603.55