Finding the Fourth Proportional to 3,667.86, 5,502.60 and 1,719

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.86 : 5,502.60 = 1,719 : x
2. Step 2: Convert to fraction form
   3,667.86/5,502.60 = 1,719/x
3. Step 3: Cross multiply
   3,667.86x = 5,502.60 × 1,719
4. Step 4: Simplify right side
   3,667.86x = 9,458,969.40
5. Step 5: Solve for x
   x = 9,458,969.40/3,667.86
6. Step 6: Final answer
   x = 2,578.88