Finding the Fourth Proportional to 2,085.12, 2,880.42 and 1,668.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.12 : 2,880.42 = 1,668.24 : x
2. Step 2: Convert to fraction form
   2,085.12/2,880.42 = 1,668.24/x
3. Step 3: Cross multiply
   2,085.12x = 2,880.42 × 1,668.24
4. Step 4: Simplify right side
   2,085.12x = 4,805,231.86
5. Step 5: Solve for x
   x = 4,805,231.86/2,085.12
6. Step 6: Final answer
   x = 2,304.53