Finding the Fourth Proportional to 2,404.49, 3,318.20 and 1,409.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,404.49 : 3,318.20 = 1,409.78 : x
2. Step 2: Convert to fraction form
   2,404.49/3,318.20 = 1,409.78/x
3. Step 3: Cross multiply
   2,404.49x = 3,318.20 × 1,409.78
4. Step 4: Simplify right side
   2,404.49x = 4,677,935.14
5. Step 5: Solve for x
   x = 4,677,935.14/2,404.49
6. Step 6: Final answer
   x = 1,945.50