Finding the Fourth Proportional to 3,123.91, 4,309.50 and 2,283.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.91 : 4,309.50 = 2,283.22 : x
2. Step 2: Convert to fraction form
   3,123.91/4,309.50 = 2,283.22/x
3. Step 3: Cross multiply
   3,123.91x = 4,309.50 × 2,283.22
4. Step 4: Simplify right side
   3,123.91x = 9,839,536.59
5. Step 5: Solve for x
   x = 9,839,536.59/3,123.91
6. Step 6: Final answer
   x = 3,149.75