Finding the Fourth Proportional to 1,805.98, 2,710.78 and 1,219.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.98 : 2,710.78 = 1,219.12 : x
2. Step 2: Convert to fraction form
   1,805.98/2,710.78 = 1,219.12/x
3. Step 3: Cross multiply
   1,805.98x = 2,710.78 × 1,219.12
4. Step 4: Simplify right side
   1,805.98x = 3,304,766.11
5. Step 5: Solve for x
   x = 3,304,766.11/1,805.98
6. Step 6: Final answer
   x = 1,829.90