Finding the Fourth Proportional to 2,168.62, 2,991.30 and 1,283.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.62 : 2,991.30 = 1,283.82 : x
2. Step 2: Convert to fraction form
   2,168.62/2,991.30 = 1,283.82/x
3. Step 3: Cross multiply
   2,168.62x = 2,991.30 × 1,283.82
4. Step 4: Simplify right side
   2,168.62x = 3,840,290.77
5. Step 5: Solve for x
   x = 3,840,290.77/2,168.62
6. Step 6: Final answer
   x = 1,770.85