Finding the Fourth Proportional to 2,039.09, 2,813.90 and 1,107.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.09 : 2,813.90 = 1,107.59 : x
2. Step 2: Convert to fraction form
   2,039.09/2,813.90 = 1,107.59/x
3. Step 3: Cross multiply
   2,039.09x = 2,813.90 × 1,107.59
4. Step 4: Simplify right side
   2,039.09x = 3,116,627.89
5. Step 5: Solve for x
   x = 3,116,627.89/2,039.09
6. Step 6: Final answer
   x = 1,528.44