Finding the Fourth Proportional to 1,352.72, 2,031.82 and 805.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,352.72 : 2,031.82 = 805.97 : x
2. Step 2: Convert to fraction form
   1,352.72/2,031.82 = 805.97/x
3. Step 3: Cross multiply
   1,352.72x = 2,031.82 × 805.97
4. Step 4: Simplify right side
   1,352.72x = 1,637,589.03
5. Step 5: Solve for x
   x = 1,637,589.03/1,352.72
6. Step 6: Final answer
   x = 1,210.59