Finding the Fourth Proportional to 3,765.91, 5,196.95 and 2,087.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,765.91 : 5,196.95 = 2,087.31 : x
2. Step 2: Convert to fraction form
   3,765.91/5,196.95 = 2,087.31/x
3. Step 3: Cross multiply
   3,765.91x = 5,196.95 × 2,087.31
4. Step 4: Simplify right side
   3,765.91x = 10,847,645.70
5. Step 5: Solve for x
   x = 10,847,645.70/3,765.91
6. Step 6: Final answer
   x = 2,880.48