Finding the Fourth Proportional to 2,080.10, 3,116.55 and 1,712.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.10 : 3,116.55 = 1,712.90 : x
2. Step 2: Convert to fraction form
   2,080.10/3,116.55 = 1,712.90/x
3. Step 3: Cross multiply
   2,080.10x = 3,116.55 × 1,712.90
4. Step 4: Simplify right side
   2,080.10x = 5,338,338.50
5. Step 5: Solve for x
   x = 5,338,338.50/2,080.10
6. Step 6: Final answer
   x = 2,566.39