Finding the Fourth Proportional to 3,679.64, 5,076.78 and 2,086.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.64 : 5,076.78 = 2,086.04 : x
2. Step 2: Convert to fraction form
   3,679.64/5,076.78 = 2,086.04/x
3. Step 3: Cross multiply
   3,679.64x = 5,076.78 × 2,086.04
4. Step 4: Simplify right side
   3,679.64x = 10,590,340.77
5. Step 5: Solve for x
   x = 10,590,340.77/3,679.64
6. Step 6: Final answer
   x = 2,878.09