Finding the Fourth Proportional to 2,385.72, 3,576.52 and 923.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.72 : 3,576.52 = 923.86 : x
2. Step 2: Convert to fraction form
   2,385.72/3,576.52 = 923.86/x
3. Step 3: Cross multiply
   2,385.72x = 3,576.52 × 923.86
4. Step 4: Simplify right side
   2,385.72x = 3,304,203.77
5. Step 5: Solve for x
   x = 3,304,203.77/2,385.72
6. Step 6: Final answer
   x = 1,384.99