Finding the Fourth Proportional to 1,864.50, 2,573.04 and 1,078.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,864.50 : 2,573.04 = 1,078.56 : x
2. Step 2: Convert to fraction form
   1,864.50/2,573.04 = 1,078.56/x
3. Step 3: Cross multiply
   1,864.50x = 2,573.04 × 1,078.56
4. Step 4: Simplify right side
   1,864.50x = 2,775,178.02
5. Step 5: Solve for x
   x = 2,775,178.02/1,864.50
6. Step 6: Final answer
   x = 1,488.43