Finding the Fourth Proportional to 1,016.34, 1,519.20 and 879.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.34 : 1,519.20 = 879.07 : x
2. Step 2: Convert to fraction form
   1,016.34/1,519.20 = 879.07/x
3. Step 3: Cross multiply
   1,016.34x = 1,519.20 × 879.07
4. Step 4: Simplify right side
   1,016.34x = 1,335,483.14
5. Step 5: Solve for x
   x = 1,335,483.14/1,016.34
6. Step 6: Final answer
   x = 1,314.01