Finding the Fourth Proportional to 2,406.69, 3,604.55 and 2,166.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.69 : 3,604.55 = 2,166.12 : x
2. Step 2: Convert to fraction form
   2,406.69/3,604.55 = 2,166.12/x
3. Step 3: Cross multiply
   2,406.69x = 3,604.55 × 2,166.12
4. Step 4: Simplify right side
   2,406.69x = 7,807,877.02
5. Step 5: Solve for x
   x = 7,807,877.02/2,406.69
6. Step 6: Final answer
   x = 3,244.24