Finding the Fourth Proportional to 2,080.23, 3,119.31 and 693.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.23 : 3,119.31 = 693.08 : x
2. Step 2: Convert to fraction form
   2,080.23/3,119.31 = 693.08/x
3. Step 3: Cross multiply
   2,080.23x = 3,119.31 × 693.08
4. Step 4: Simplify right side
   2,080.23x = 2,161,931.37
5. Step 5: Solve for x
   x = 2,161,931.37/2,080.23
6. Step 6: Final answer
   x = 1,039.28