Finding the Fourth Proportional to 3,665.18, 5,497.18 and 1,200.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.18 : 5,497.18 = 1,200.04 : x
2. Step 2: Convert to fraction form
   3,665.18/5,497.18 = 1,200.04/x
3. Step 3: Cross multiply
   3,665.18x = 5,497.18 × 1,200.04
4. Step 4: Simplify right side
   3,665.18x = 6,596,835.89
5. Step 5: Solve for x
   x = 6,596,835.89/3,665.18
6. Step 6: Final answer
   x = 1,799.87