Finding the Fourth Proportional to 3,679.51, 5,077.45 and 2,086.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.51 : 5,077.45 = 2,086.19 : x
2. Step 2: Convert to fraction form
   3,679.51/5,077.45 = 2,086.19/x
3. Step 3: Cross multiply
   3,679.51x = 5,077.45 × 2,086.19
4. Step 4: Simplify right side
   3,679.51x = 10,592,500.03
5. Step 5: Solve for x
   x = 10,592,500.03/3,679.51
6. Step 6: Final answer
   x = 2,878.78