Finding the Fourth Proportional to 2,080.91, 3,119.45 and 985.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.91 : 3,119.45 = 985.59 : x
2. Step 2: Convert to fraction form
   2,080.91/3,119.45 = 985.59/x
3. Step 3: Cross multiply
   2,080.91x = 3,119.45 × 985.59
4. Step 4: Simplify right side
   2,080.91x = 3,074,493.80
5. Step 5: Solve for x
   x = 3,074,493.80/2,080.91
6. Step 6: Final answer
   x = 1,477.47