Finding the Fourth Proportional to 2,078.39, 2,868.15 and 1,194.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.39 : 2,868.15 = 1,194.21 : x
2. Step 2: Convert to fraction form
   2,078.39/2,868.15 = 1,194.21/x
3. Step 3: Cross multiply
   2,078.39x = 2,868.15 × 1,194.21
4. Step 4: Simplify right side
   2,078.39x = 3,425,177.89
5. Step 5: Solve for x
   x = 3,425,177.89/2,078.39
6. Step 6: Final answer
   x = 1,647.99