Finding the Fourth Proportional to 2,942.52, 4,410.42 and 1,209

Step by Step Solution

1. Step 1: Write the proportion equation
   2,942.52 : 4,410.42 = 1,209 : x
2. Step 2: Convert to fraction form
   2,942.52/4,410.42 = 1,209/x
3. Step 3: Cross multiply
   2,942.52x = 4,410.42 × 1,209
4. Step 4: Simplify right side
   2,942.52x = 5,332,197.78
5. Step 5: Solve for x
   x = 5,332,197.78/2,942.52
6. Step 6: Final answer
   x = 1,812.12