Finding the Fourth Proportional to 2,081.77, 2,872.73 and 1,243.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.77 : 2,872.73 = 1,243.42 : x
2. Step 2: Convert to fraction form
   2,081.77/2,872.73 = 1,243.42/x
3. Step 3: Cross multiply
   2,081.77x = 2,872.73 × 1,243.42
4. Step 4: Simplify right side
   2,081.77x = 3,572,003.72
5. Step 5: Solve for x
   x = 3,572,003.72/2,081.77
6. Step 6: Final answer
   x = 1,715.85