Finding the Fourth Proportional to 2,054.17, 2,831.42 and 1,605.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.17 : 2,831.42 = 1,605.25 : x
2. Step 2: Convert to fraction form
   2,054.17/2,831.42 = 1,605.25/x
3. Step 3: Cross multiply
   2,054.17x = 2,831.42 × 1,605.25
4. Step 4: Simplify right side
   2,054.17x = 4,545,136.96
5. Step 5: Solve for x
   x = 4,545,136.96/2,054.17
6. Step 6: Final answer
   x = 2,212.64