Finding the Fourth Proportional to 2,790.69, 4,180.06 and 2,096.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790.69 : 4,180.06 = 2,096.31 : x
2. Step 2: Convert to fraction form
   2,790.69/4,180.06 = 2,096.31/x
3. Step 3: Cross multiply
   2,790.69x = 4,180.06 × 2,096.31
4. Step 4: Simplify right side
   2,790.69x = 8,762,701.58
5. Step 5: Solve for x
   x = 8,762,701.58/2,790.69
6. Step 6: Final answer
   x = 3,139.98