Finding the Fourth Proportional to 3,679.39, 5,077.59 and 2,188.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.39 : 5,077.59 = 2,188.05 : x
2. Step 2: Convert to fraction form
   3,679.39/5,077.59 = 2,188.05/x
3. Step 3: Cross multiply
   3,679.39x = 5,077.59 × 2,188.05
4. Step 4: Simplify right side
   3,679.39x = 11,109,993.55
5. Step 5: Solve for x
   x = 11,109,993.55/3,679.39
6. Step 6: Final answer
   x = 3,019.52