Finding the Fourth Proportional to 1,805.87, 2,492.15 and 1,019.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.87 : 2,492.15 = 1,019.91 : x
2. Step 2: Convert to fraction form
   1,805.87/2,492.15 = 1,019.91/x
3. Step 3: Cross multiply
   1,805.87x = 2,492.15 × 1,019.91
4. Step 4: Simplify right side
   1,805.87x = 2,541,763.61
5. Step 5: Solve for x
   x = 2,541,763.61/1,805.87
6. Step 6: Final answer
   x = 1,407.50