Finding the Fourth Proportional to 3,619.92, 5,424.96 and 1,667.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,619.92 : 5,424.96 = 1,667.88 : x
2. Step 2: Convert to fraction form
   3,619.92/5,424.96 = 1,667.88/x
3. Step 3: Cross multiply
   3,619.92x = 5,424.96 × 1,667.88
4. Step 4: Simplify right side
   3,619.92x = 9,048,182.28
5. Step 5: Solve for x
   x = 9,048,182.28/3,619.92
6. Step 6: Final answer
   x = 2,499.55