Finding the Fourth Proportional to 2,204.52, 3,042.30 and 1,209.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,204.52 : 3,042.30 = 1,209.78 : x
2. Step 2: Convert to fraction form
   2,204.52/3,042.30 = 1,209.78/x
3. Step 3: Cross multiply
   2,204.52x = 3,042.30 × 1,209.78
4. Step 4: Simplify right side
   2,204.52x = 3,680,513.69
5. Step 5: Solve for x
   x = 3,680,513.69/2,204.52
6. Step 6: Final answer
   x = 1,669.53