Finding the Fourth Proportional to 3,667.96, 5,504.10 and 1,720.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.96 : 5,504.10 = 1,720.18 : x
2. Step 2: Convert to fraction form
   3,667.96/5,504.10 = 1,720.18/x
3. Step 3: Cross multiply
   3,667.96x = 5,504.10 × 1,720.18
4. Step 4: Simplify right side
   3,667.96x = 9,468,042.74
5. Step 5: Solve for x
   x = 9,468,042.74/3,667.96
6. Step 6: Final answer
   x = 2,581.28