Finding the Fourth Proportional to 1,863.91, 2,572.24 and 1,078.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863.91 : 2,572.24 = 1,078.01 : x
2. Step 2: Convert to fraction form
   1,863.91/2,572.24 = 1,078.01/x
3. Step 3: Cross multiply
   1,863.91x = 2,572.24 × 1,078.01
4. Step 4: Simplify right side
   1,863.91x = 2,772,887.58
5. Step 5: Solve for x
   x = 2,772,887.58/1,863.91
6. Step 6: Final answer
   x = 1,487.68