Finding the Fourth Proportional to 2,089.68, 2,871.97 and 2,031.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.68 : 2,871.97 = 2,031.36 : x
2. Step 2: Convert to fraction form
   2,089.68/2,871.97 = 2,031.36/x
3. Step 3: Cross multiply
   2,089.68x = 2,871.97 × 2,031.36
4. Step 4: Simplify right side
   2,089.68x = 5,834,004.98
5. Step 5: Solve for x
   x = 5,834,004.98/2,089.68
6. Step 6: Final answer
   x = 2,791.82