Finding the Fourth Proportional to 2,029.96, 2,800.72 and 1,243.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,029.96 : 2,800.72 = 1,243.20 : x
2. Step 2: Convert to fraction form
   2,029.96/2,800.72 = 1,243.20/x
3. Step 3: Cross multiply
   2,029.96x = 2,800.72 × 1,243.20
4. Step 4: Simplify right side
   2,029.96x = 3,481,855.10
5. Step 5: Solve for x
   x = 3,481,855.10/2,029.96
6. Step 6: Final answer
   x = 1,715.23