Finding the Fourth Proportional to 2,662.31, 3,987.64 and 2,194.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.31 : 3,987.64 = 2,194.83 : x
2. Step 2: Convert to fraction form
   2,662.31/3,987.64 = 2,194.83/x
3. Step 3: Cross multiply
   2,662.31x = 3,987.64 × 2,194.83
4. Step 4: Simplify right side
   2,662.31x = 8,752,214.55
5. Step 5: Solve for x
   x = 8,752,214.55/2,662.31
6. Step 6: Final answer
   x = 3,287.46