Finding the Fourth Proportional to 3,789.92, 5,685.42 and 1,326.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,789.92 : 5,685.42 = 1,326.18 : x
2. Step 2: Convert to fraction form
   3,789.92/5,685.42 = 1,326.18/x
3. Step 3: Cross multiply
   3,789.92x = 5,685.42 × 1,326.18
4. Step 4: Simplify right side
   3,789.92x = 7,539,890.30
5. Step 5: Solve for x
   x = 7,539,890.30/3,789.92
6. Step 6: Final answer
   x = 1,989.46