Finding the Fourth Proportional to 3,665.69, 5,499.32 and 1,200.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.69 : 5,499.32 = 1,200.33 : x
2. Step 2: Convert to fraction form
   3,665.69/5,499.32 = 1,200.33/x
3. Step 3: Cross multiply
   3,665.69x = 5,499.32 × 1,200.33
4. Step 4: Simplify right side
   3,665.69x = 6,600,995.02
5. Step 5: Solve for x
   x = 6,600,995.02/3,665.69
6. Step 6: Final answer
   x = 1,800.75