Finding the Fourth Proportional to 2,079.98, 3,119.69 and 847.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.98 : 3,119.69 = 847.40 : x
2. Step 2: Convert to fraction form
   2,079.98/3,119.69 = 847.40/x
3. Step 3: Cross multiply
   2,079.98x = 3,119.69 × 847.40
4. Step 4: Simplify right side
   2,079.98x = 2,643,605.47
5. Step 5: Solve for x
   x = 2,643,605.47/2,079.98
6. Step 6: Final answer
   x = 1,270.98