Finding the Fourth Proportional to 2,451.18, 3,385.38 and 1,663.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,451.18 : 3,385.38 = 1,663.86 : x
2. Step 2: Convert to fraction form
   2,451.18/3,385.38 = 1,663.86/x
3. Step 3: Cross multiply
   2,451.18x = 3,385.38 × 1,663.86
4. Step 4: Simplify right side
   2,451.18x = 5,632,798.37
5. Step 5: Solve for x
   x = 5,632,798.37/2,451.18
6. Step 6: Final answer
   x = 2,297.99