Finding the Fourth Proportional to 2,080.84, 3,118.83 and 925.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.84 : 3,118.83 = 925.78 : x
2. Step 2: Convert to fraction form
   2,080.84/3,118.83 = 925.78/x
3. Step 3: Cross multiply
   2,080.84x = 3,118.83 × 925.78
4. Step 4: Simplify right side
   2,080.84x = 2,887,350.44
5. Step 5: Solve for x
   x = 2,887,350.44/2,080.84
6. Step 6: Final answer
   x = 1,387.59