Finding the Fourth Proportional to 3,680.01, 5,078.16 and 2,086.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.01 : 5,078.16 = 2,086.74 : x
2. Step 2: Convert to fraction form
   3,680.01/5,078.16 = 2,086.74/x
3. Step 3: Cross multiply
   3,680.01x = 5,078.16 × 2,086.74
4. Step 4: Simplify right side
   3,680.01x = 10,596,799.60
5. Step 5: Solve for x
   x = 10,596,799.60/3,680.01
6. Step 6: Final answer
   x = 2,879.56