Finding the Fourth Proportional to 2,772.79, 4,158.28 and 923.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.79 : 4,158.28 = 923.41 : x
2. Step 2: Convert to fraction form
   2,772.79/4,158.28 = 923.41/x
3. Step 3: Cross multiply
   2,772.79x = 4,158.28 × 923.41
4. Step 4: Simplify right side
   2,772.79x = 3,839,797.33
5. Step 5: Solve for x
   x = 3,839,797.33/2,772.79
6. Step 6: Final answer
   x = 1,384.81