Finding the Fourth Proportional to 2,086.75, 2,881.86 and 1,805.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.75 : 2,881.86 = 1,805.63 : x
2. Step 2: Convert to fraction form
   2,086.75/2,881.86 = 1,805.63/x
3. Step 3: Cross multiply
   2,086.75x = 2,881.86 × 1,805.63
4. Step 4: Simplify right side
   2,086.75x = 5,203,572.87
5. Step 5: Solve for x
   x = 5,203,572.87/2,086.75
6. Step 6: Final answer
   x = 2,493.63