Finding the Fourth Proportional to 1,863.06, 2,570.52 and 1,116.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863.06 : 2,570.52 = 1,116.78 : x
2. Step 2: Convert to fraction form
   1,863.06/2,570.52 = 1,116.78/x
3. Step 3: Cross multiply
   1,863.06x = 2,570.52 × 1,116.78
4. Step 4: Simplify right side
   1,863.06x = 2,870,705.33
5. Step 5: Solve for x
   x = 2,870,705.33/1,863.06
6. Step 6: Final answer
   x = 1,540.86