Finding the Fourth Proportional to 1,018.52, 1,404.52 and 879.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.52 : 1,404.52 = 879.08 : x
2. Step 2: Convert to fraction form
   1,018.52/1,404.52 = 879.08/x
3. Step 3: Cross multiply
   1,018.52x = 1,404.52 × 879.08
4. Step 4: Simplify right side
   1,018.52x = 1,234,685.44
5. Step 5: Solve for x
   x = 1,234,685.44/1,018.52
6. Step 6: Final answer
   x = 1,212.23