Finding the Fourth Proportional to 2,086.82, 3,130.33 and 1,720.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.82 : 3,130.33 = 1,720.93 : x
2. Step 2: Convert to fraction form
   2,086.82/3,130.33 = 1,720.93/x
3. Step 3: Cross multiply
   2,086.82x = 3,130.33 × 1,720.93
4. Step 4: Simplify right side
   2,086.82x = 5,387,078.81
5. Step 5: Solve for x
   x = 5,387,078.81/2,086.82
6. Step 6: Final answer
   x = 2,581.48