Finding the Fourth Proportional to 2,087.82, 3,131.83 and 1,721.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.82 : 3,131.83 = 1,721.93 : x
2. Step 2: Convert to fraction form
   2,087.82/3,131.83 = 1,721.93/x
3. Step 3: Cross multiply
   2,087.82x = 3,131.83 × 1,721.93
4. Step 4: Simplify right side
   2,087.82x = 5,392,792.03
5. Step 5: Solve for x
   x = 5,392,792.03/2,087.82
6. Step 6: Final answer
   x = 2,582.98