Finding the Fourth Proportional to 3,666.34, 5,498.37 and 1,200.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.34 : 5,498.37 = 1,200.61 : x
2. Step 2: Convert to fraction form
   3,666.34/5,498.37 = 1,200.61/x
3. Step 3: Cross multiply
   3,666.34x = 5,498.37 × 1,200.61
4. Step 4: Simplify right side
   3,666.34x = 6,601,398.01
5. Step 5: Solve for x
   x = 6,601,398.01/3,666.34
6. Step 6: Final answer
   x = 1,800.54