Finding the Fourth Proportional to 1,805.86, 2,491.86 and 1,019.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.86 : 2,491.86 = 1,019.77 : x
2. Step 2: Convert to fraction form
   1,805.86/2,491.86 = 1,019.77/x
3. Step 3: Cross multiply
   1,805.86x = 2,491.86 × 1,019.77
4. Step 4: Simplify right side
   1,805.86x = 2,541,124.07
5. Step 5: Solve for x
   x = 2,541,124.07/1,805.86
6. Step 6: Final answer
   x = 1,407.15