Finding the Fourth Proportional to 3,679.83, 5,077.72 and 2,086.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.83 : 5,077.72 = 2,086.36 : x
2. Step 2: Convert to fraction form
   3,679.83/5,077.72 = 2,086.36/x
3. Step 3: Cross multiply
   3,679.83x = 5,077.72 × 2,086.36
4. Step 4: Simplify right side
   3,679.83x = 10,593,941.81
5. Step 5: Solve for x
   x = 10,593,941.81/3,679.83
6. Step 6: Final answer
   x = 2,878.92