Finding the Fourth Proportional to 1,253.49, 1,730.61 and 805.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.49 : 1,730.61 = 805.56 : x
2. Step 2: Convert to fraction form
   1,253.49/1,730.61 = 805.56/x
3. Step 3: Cross multiply
   1,253.49x = 1,730.61 × 805.56
4. Step 4: Simplify right side
   1,253.49x = 1,394,116.52
5. Step 5: Solve for x
   x = 1,394,116.52/1,253.49
6. Step 6: Final answer
   x = 1,112.18