Finding the Fourth Proportional to 2,406.13, 3,609.63 and 1,107.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.13 : 3,609.63 = 1,107.56 : x
2. Step 2: Convert to fraction form
   2,406.13/3,609.63 = 1,107.56/x
3. Step 3: Cross multiply
   2,406.13x = 3,609.63 × 1,107.56
4. Step 4: Simplify right side
   2,406.13x = 3,997,890.83
5. Step 5: Solve for x
   x = 3,997,890.83/2,406.13
6. Step 6: Final answer
   x = 1,661.55