Finding the Fourth Proportional to 2,667.12, 3,680.52 and 1,605.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.12 : 3,680.52 = 1,605.54 : x
2. Step 2: Convert to fraction form
   2,667.12/3,680.52 = 1,605.54/x
3. Step 3: Cross multiply
   2,667.12x = 3,680.52 × 1,605.54
4. Step 4: Simplify right side
   2,667.12x = 5,909,222.08
5. Step 5: Solve for x
   x = 5,909,222.08/2,667.12
6. Step 6: Final answer
   x = 2,215.58