Finding the Fourth Proportional to 1,863.35, 2,570.24 and 1,116.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863.35 : 2,570.24 = 1,116.80 : x
2. Step 2: Convert to fraction form
   1,863.35/2,570.24 = 1,116.80/x
3. Step 3: Cross multiply
   1,863.35x = 2,570.24 × 1,116.80
4. Step 4: Simplify right side
   1,863.35x = 2,870,433.97
5. Step 5: Solve for x
   x = 2,870,433.97/1,863.35
6. Step 6: Final answer
   x = 1,540.47