Finding the Fourth Proportional to 2,007.82, 2,770.81 and 1,211.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.82 : 2,770.81 = 1,211.19 : x
2. Step 2: Convert to fraction form
   2,007.82/2,770.81 = 1,211.19/x
3. Step 3: Cross multiply
   2,007.82x = 2,770.81 × 1,211.19
4. Step 4: Simplify right side
   2,007.82x = 3,355,963.95
5. Step 5: Solve for x
   x = 3,355,963.95/2,007.82
6. Step 6: Final answer
   x = 1,671.45