Finding the Fourth Proportional to 2,385.27, 3,577.30 and 923.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.27 : 3,577.30 = 923.63 : x
2. Step 2: Convert to fraction form
   2,385.27/3,577.30 = 923.63/x
3. Step 3: Cross multiply
   2,385.27x = 3,577.30 × 923.63
4. Step 4: Simplify right side
   2,385.27x = 3,304,081.40
5. Step 5: Solve for x
   x = 3,304,081.40/2,385.27
6. Step 6: Final answer
   x = 1,385.20