Finding the Fourth Proportional to 2,443.68, 3,664.96 and 1,209.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.68 : 3,664.96 = 1,209.76 : x
2. Step 2: Convert to fraction form
   2,443.68/3,664.96 = 1,209.76/x
3. Step 3: Cross multiply
   2,443.68x = 3,664.96 × 1,209.76
4. Step 4: Simplify right side
   2,443.68x = 4,433,722.01
5. Step 5: Solve for x
   x = 4,433,722.01/2,443.68
6. Step 6: Final answer
   x = 1,814.36