Finding the Fourth Proportional to 2,655.69, 3,986.72 and 1,766.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,655.69 : 3,986.72 = 1,766.91 : x
2. Step 2: Convert to fraction form
   2,655.69/3,986.72 = 1,766.91/x
3. Step 3: Cross multiply
   2,655.69x = 3,986.72 × 1,766.91
4. Step 4: Simplify right side
   2,655.69x = 7,044,188.18
5. Step 5: Solve for x
   x = 7,044,188.18/2,655.69
6. Step 6: Final answer
   x = 2,652.49