Finding the Fourth Proportional to 2,039.17, 2,814.06 and 1,107.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.17 : 2,814.06 = 1,107.67 : x
2. Step 2: Convert to fraction form
   2,039.17/2,814.06 = 1,107.67/x
3. Step 3: Cross multiply
   2,039.17x = 2,814.06 × 1,107.67
4. Step 4: Simplify right side
   2,039.17x = 3,117,049.84
5. Step 5: Solve for x
   x = 3,117,049.84/2,039.17
6. Step 6: Final answer
   x = 1,528.59