Finding the Fourth Proportional to 2,385.20, 3,574.56 and 996.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.20 : 3,574.56 = 996.86 : x
2. Step 2: Convert to fraction form
   2,385.20/3,574.56 = 996.86/x
3. Step 3: Cross multiply
   2,385.20x = 3,574.56 × 996.86
4. Step 4: Simplify right side
   2,385.20x = 3,563,335.88
5. Step 5: Solve for x
   x = 3,563,335.88/2,385.20
6. Step 6: Final answer
   x = 1,493.94