Finding the Fourth Proportional to 1,864.22, 2,572.56 and 1,078.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,864.22 : 2,572.56 = 1,078.52 : x
2. Step 2: Convert to fraction form
   1,864.22/2,572.56 = 1,078.52/x
3. Step 3: Cross multiply
   1,864.22x = 2,572.56 × 1,078.52
4. Step 4: Simplify right side
   1,864.22x = 2,774,544.55
5. Step 5: Solve for x
   x = 2,774,544.55/1,864.22
6. Step 6: Final answer
   x = 1,488.32