Finding the Fourth Proportional to 2,080.05, 3,120.67 and 694.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.05 : 3,120.67 = 694.29 : x
2. Step 2: Convert to fraction form
   2,080.05/3,120.67 = 694.29/x
3. Step 3: Cross multiply
   2,080.05x = 3,120.67 × 694.29
4. Step 4: Simplify right side
   2,080.05x = 2,166,646.50
5. Step 5: Solve for x
   x = 2,166,646.50/2,080.05
6. Step 6: Final answer
   x = 1,041.63