Finding the Fourth Proportional to 2,805.98, 4,209 and 1,340.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,805.98 : 4,209 = 1,340.69 : x
2. Step 2: Convert to fraction form
   2,805.98/4,209 = 1,340.69/x
3. Step 3: Cross multiply
   2,805.98x = 4,209 × 1,340.69
4. Step 4: Simplify right side
   2,805.98x = 5,642,974.73
5. Step 5: Solve for x
   x = 5,642,974.73/2,805.98
6. Step 6: Final answer
   x = 2,011.05