Finding the Fourth Proportional to 2,080.80, 3,118.47 and 846.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.80 : 3,118.47 = 846.75 : x
2. Step 2: Convert to fraction form
   2,080.80/3,118.47 = 846.75/x
3. Step 3: Cross multiply
   2,080.80x = 3,118.47 × 846.75
4. Step 4: Simplify right side
   2,080.80x = 2,640,564.47
5. Step 5: Solve for x
   x = 2,640,564.47/2,080.80
6. Step 6: Final answer
   x = 1,269.01