Finding the Fourth Proportional to 2,772.59, 4,158.32 and 923.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.59 : 4,158.32 = 923.49 : x
2. Step 2: Convert to fraction form
   2,772.59/4,158.32 = 923.49/x
3. Step 3: Cross multiply
   2,772.59x = 4,158.32 × 923.49
4. Step 4: Simplify right side
   2,772.59x = 3,840,162.32
5. Step 5: Solve for x
   x = 3,840,162.32/2,772.59
6. Step 6: Final answer
   x = 1,385.05