Finding the Fourth Proportional to 2,853.23, 4,280.58 and 1,209.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,853.23 : 4,280.58 = 1,209.83 : x
2. Step 2: Convert to fraction form
   2,853.23/4,280.58 = 1,209.83/x
3. Step 3: Cross multiply
   2,853.23x = 4,280.58 × 1,209.83
4. Step 4: Simplify right side
   2,853.23x = 5,178,752.70
5. Step 5: Solve for x
   x = 5,178,752.70/2,853.23
6. Step 6: Final answer
   x = 1,815.05