Finding the Fourth Proportional to 1,805.77, 2,491.89 and 1,009.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.77 : 2,491.89 = 1,009.06 : x
2. Step 2: Convert to fraction form
   1,805.77/2,491.89 = 1,009.06/x
3. Step 3: Cross multiply
   1,805.77x = 2,491.89 × 1,009.06
4. Step 4: Simplify right side
   1,805.77x = 2,514,466.52
5. Step 5: Solve for x
   x = 2,514,466.52/1,805.77
6. Step 6: Final answer
   x = 1,392.46