Finding the Fourth Proportional to 2,078.84, 2,868.54 and 1,147.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.84 : 2,868.54 = 1,147.16 : x
2. Step 2: Convert to fraction form
   2,078.84/2,868.54 = 1,147.16/x
3. Step 3: Cross multiply
   2,078.84x = 2,868.54 × 1,147.16
4. Step 4: Simplify right side
   2,078.84x = 3,290,674.35
5. Step 5: Solve for x
   x = 3,290,674.35/2,078.84
6. Step 6: Final answer
   x = 1,582.94