Finding the Fourth Proportional to 1,697.91, 2,546.46 and 1,080.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,697.91 : 2,546.46 = 1,080.69 : x
2. Step 2: Convert to fraction form
   1,697.91/2,546.46 = 1,080.69/x
3. Step 3: Cross multiply
   1,697.91x = 2,546.46 × 1,080.69
4. Step 4: Simplify right side
   1,697.91x = 2,751,933.86
5. Step 5: Solve for x
   x = 2,751,933.86/1,697.91
6. Step 6: Final answer
   x = 1,620.78