Finding the Fourth Proportional to 3,131.97, 4,322.96 and 1,805.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.97 : 4,322.96 = 1,805.89 : x
2. Step 2: Convert to fraction form
   3,131.97/4,322.96 = 1,805.89/x
3. Step 3: Cross multiply
   3,131.97x = 4,322.96 × 1,805.89
4. Step 4: Simplify right side
   3,131.97x = 7,806,790.23
5. Step 5: Solve for x
   x = 7,806,790.23/3,131.97
6. Step 6: Final answer
   x = 2,492.61