Finding the Fourth Proportional to 2,912.17, 4,367.31 and 1,268.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,912.17 : 4,367.31 = 1,268.23 : x
2. Step 2: Convert to fraction form
   2,912.17/4,367.31 = 1,268.23/x
3. Step 3: Cross multiply
   2,912.17x = 4,367.31 × 1,268.23
4. Step 4: Simplify right side
   2,912.17x = 5,538,753.56
5. Step 5: Solve for x
   x = 5,538,753.56/2,912.17
6. Step 6: Final answer
   x = 1,901.93