Finding the Fourth Proportional to 2,162.46, 2,985.62 and 1,664.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.46 : 2,985.62 = 1,664.22 : x
2. Step 2: Convert to fraction form
   2,162.46/2,985.62 = 1,664.22/x
3. Step 3: Cross multiply
   2,162.46x = 2,985.62 × 1,664.22
4. Step 4: Simplify right side
   2,162.46x = 4,968,728.52
5. Step 5: Solve for x
   x = 4,968,728.52/2,162.46
6. Step 6: Final answer
   x = 2,297.72