Finding the Fourth Proportional to 2,791.34, 3,852.55 and 2,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,791.34 : 3,852.55 = 2,086.72 : x
2. Step 2: Convert to fraction form
   2,791.34/3,852.55 = 2,086.72/x
3. Step 3: Cross multiply
   2,791.34x = 3,852.55 × 2,086.72
4. Step 4: Simplify right side
   2,791.34x = 8,039,178.29
5. Step 5: Solve for x
   x = 8,039,178.29/2,791.34
6. Step 6: Final answer
   x = 2,880.04