Finding the Fourth Proportional to 2,076.42, 2,862.97 and 1,290.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.42 : 2,862.97 = 1,290.32 : x
2. Step 2: Convert to fraction form
   2,076.42/2,862.97 = 1,290.32/x
3. Step 3: Cross multiply
   2,076.42x = 2,862.97 × 1,290.32
4. Step 4: Simplify right side
   2,076.42x = 3,694,147.45
5. Step 5: Solve for x
   x = 3,694,147.45/2,076.42
6. Step 6: Final answer
   x = 1,779.09