Finding the Fourth Proportional to 1,863.99, 2,572.56 and 1,078.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863.99 : 2,572.56 = 1,078.29 : x
2. Step 2: Convert to fraction form
   1,863.99/2,572.56 = 1,078.29/x
3. Step 3: Cross multiply
   1,863.99x = 2,572.56 × 1,078.29
4. Step 4: Simplify right side
   1,863.99x = 2,773,965.72
5. Step 5: Solve for x
   x = 2,773,965.72/1,863.99
6. Step 6: Final answer
   x = 1,488.19