Finding the Fourth Proportional to 3,667.21, 5,501.72 and 1,819.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.21 : 5,501.72 = 1,819.19 : x
2. Step 2: Convert to fraction form
   3,667.21/5,501.72 = 1,819.19/x
3. Step 3: Cross multiply
   3,667.21x = 5,501.72 × 1,819.19
4. Step 4: Simplify right side
   3,667.21x = 10,008,692.31
5. Step 5: Solve for x
   x = 10,008,692.31/3,667.21
6. Step 6: Final answer
   x = 2,729.24