Finding the Fourth Proportional to 2,667.60, 3,681.50 and 1,605.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.60 : 3,681.50 = 1,605.52 : x
2. Step 2: Convert to fraction form
   2,667.60/3,681.50 = 1,605.52/x
3. Step 3: Cross multiply
   2,667.60x = 3,681.50 × 1,605.52
4. Step 4: Simplify right side
   2,667.60x = 5,910,721.88
5. Step 5: Solve for x
   x = 5,910,721.88/2,667.60
6. Step 6: Final answer
   x = 2,215.75