Finding the Fourth Proportional to 3,661.20, 5,490.18 and 1,064.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,661.20 : 5,490.18 = 1,064.34 : x
2. Step 2: Convert to fraction form
   3,661.20/5,490.18 = 1,064.34/x
3. Step 3: Cross multiply
   3,661.20x = 5,490.18 × 1,064.34
4. Step 4: Simplify right side
   3,661.20x = 5,843,418.18
5. Step 5: Solve for x
   x = 5,843,418.18/3,661.20
6. Step 6: Final answer
   x = 1,596.04