Finding the Fourth Proportional to 2,572.84, 3,550.62 and 1,687.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.84 : 3,550.62 = 1,687.96 : x
2. Step 2: Convert to fraction form
   2,572.84/3,550.62 = 1,687.96/x
3. Step 3: Cross multiply
   2,572.84x = 3,550.62 × 1,687.96
4. Step 4: Simplify right side
   2,572.84x = 5,993,304.54
5. Step 5: Solve for x
   x = 5,993,304.54/2,572.84
6. Step 6: Final answer
   x = 2,329.45