Finding the Fourth Proportional to 2,039.25, 2,814.18 and 1,107.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.25 : 2,814.18 = 1,107.75 : x
2. Step 2: Convert to fraction form
   2,039.25/2,814.18 = 1,107.75/x
3. Step 3: Cross multiply
   2,039.25x = 2,814.18 × 1,107.75
4. Step 4: Simplify right side
   2,039.25x = 3,117,407.90
5. Step 5: Solve for x
   x = 3,117,407.90/2,039.25
6. Step 6: Final answer
   x = 1,528.70