Finding the Fourth Proportional to 2,167.76, 2,991.69 and 1,283.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167.76 : 2,991.69 = 1,283.42 : x
2. Step 2: Convert to fraction form
   2,167.76/2,991.69 = 1,283.42/x
3. Step 3: Cross multiply
   2,167.76x = 2,991.69 × 1,283.42
4. Step 4: Simplify right side
   2,167.76x = 3,839,579.82
5. Step 5: Solve for x
   x = 3,839,579.82/2,167.76
6. Step 6: Final answer
   x = 1,771.22