Finding the Fourth Proportional to 2,078.60, 2,883.17 and 2,003.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.60 : 2,883.17 = 2,003.79 : x
2. Step 2: Convert to fraction form
   2,078.60/2,883.17 = 2,003.79/x
3. Step 3: Cross multiply
   2,078.60x = 2,883.17 × 2,003.79
4. Step 4: Simplify right side
   2,078.60x = 5,777,257.20
5. Step 5: Solve for x
   x = 5,777,257.20/2,078.60
6. Step 6: Final answer
   x = 2,779.40