Finding the Fourth Proportional to 2,405.06, 3,604.83 and 1,089.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.06 : 3,604.83 = 1,089.81 : x
2. Step 2: Convert to fraction form
   2,405.06/3,604.83 = 1,089.81/x
3. Step 3: Cross multiply
   2,405.06x = 3,604.83 × 1,089.81
4. Step 4: Simplify right side
   2,405.06x = 3,928,579.78
5. Step 5: Solve for x
   x = 3,928,579.78/2,405.06
6. Step 6: Final answer
   x = 1,633.47