Finding the Fourth Proportional to 1,805.59, 2,491.66 and 1,019.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.59 : 2,491.66 = 1,019.69 : x
2. Step 2: Convert to fraction form
   1,805.59/2,491.66 = 1,019.69/x
3. Step 3: Cross multiply
   1,805.59x = 2,491.66 × 1,019.69
4. Step 4: Simplify right side
   1,805.59x = 2,540,718.95
5. Step 5: Solve for x
   x = 2,540,718.95/1,805.59
6. Step 6: Final answer
   x = 1,407.14