Finding the Fourth Proportional to 1,805.89, 2,491.89 and 1,009.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.89 : 2,491.89 = 1,009.18 : x
2. Step 2: Convert to fraction form
   1,805.89/2,491.89 = 1,009.18/x
3. Step 3: Cross multiply
   1,805.89x = 2,491.89 × 1,009.18
4. Step 4: Simplify right side
   1,805.89x = 2,514,765.55
5. Step 5: Solve for x
   x = 2,514,765.55/1,805.89
6. Step 6: Final answer
   x = 1,392.54