Finding the Fourth Proportional to 2,167.31, 2,991.27 and 1,283.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167.31 : 2,991.27 = 1,283.54 : x
2. Step 2: Convert to fraction form
   2,167.31/2,991.27 = 1,283.54/x
3. Step 3: Cross multiply
   2,167.31x = 2,991.27 × 1,283.54
4. Step 4: Simplify right side
   2,167.31x = 3,839,422.17
5. Step 5: Solve for x
   x = 3,839,422.17/2,167.31
6. Step 6: Final answer
   x = 1,771.52