Finding the Fourth Proportional to 2,912.64, 4,367.89 and 1,268.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,912.64 : 4,367.89 = 1,268.79 : x
2. Step 2: Convert to fraction form
   2,912.64/4,367.89 = 1,268.79/x
3. Step 3: Cross multiply
   2,912.64x = 4,367.89 × 1,268.79
4. Step 4: Simplify right side
   2,912.64x = 5,541,935.15
5. Step 5: Solve for x
   x = 5,541,935.15/2,912.64
6. Step 6: Final answer
   x = 1,902.72