Finding the Fourth Proportional to 2,686.61, 3,706.86 and 1,610.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.61 : 3,706.86 = 1,610.24 : x
2. Step 2: Convert to fraction form
   2,686.61/3,706.86 = 1,610.24/x
3. Step 3: Cross multiply
   2,686.61x = 3,706.86 × 1,610.24
4. Step 4: Simplify right side
   2,686.61x = 5,968,934.25
5. Step 5: Solve for x
   x = 5,968,934.25/2,686.61
6. Step 6: Final answer
   x = 2,221.73