Finding the Fourth Proportional to 1,867.72, 2,578.02 and 1,081.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,867.72 : 2,578.02 = 1,081.96 : x
2. Step 2: Convert to fraction form
   1,867.72/2,578.02 = 1,081.96/x
3. Step 3: Cross multiply
   1,867.72x = 2,578.02 × 1,081.96
4. Step 4: Simplify right side
   1,867.72x = 2,789,314.52
5. Step 5: Solve for x
   x = 2,789,314.52/1,867.72
6. Step 6: Final answer
   x = 1,493.43