Finding the Fourth Proportional to 2,772.42, 4,158.61 and 923.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.42 : 4,158.61 = 923.53 : x
2. Step 2: Convert to fraction form
   2,772.42/4,158.61 = 923.53/x
3. Step 3: Cross multiply
   2,772.42x = 4,158.61 × 923.53
4. Step 4: Simplify right side
   2,772.42x = 3,840,601.09
5. Step 5: Solve for x
   x = 3,840,601.09/2,772.42
6. Step 6: Final answer
   x = 1,385.29