Finding the Fourth Proportional to 2,080.78, 2,865.92 and 1,801.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.78 : 2,865.92 = 1,801.04 : x
2. Step 2: Convert to fraction form
   2,080.78/2,865.92 = 1,801.04/x
3. Step 3: Cross multiply
   2,080.78x = 2,865.92 × 1,801.04
4. Step 4: Simplify right side
   2,080.78x = 5,161,613.22
5. Step 5: Solve for x
   x = 5,161,613.22/2,080.78
6. Step 6: Final answer
   x = 2,480.62