Finding the Fourth Proportional to 1,078.34, 1,616.76 and 712.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.34 : 1,616.76 = 712.01 : x
2. Step 2: Convert to fraction form
   1,078.34/1,616.76 = 712.01/x
3. Step 3: Cross multiply
   1,078.34x = 1,616.76 × 712.01
4. Step 4: Simplify right side
   1,078.34x = 1,151,153.33
5. Step 5: Solve for x
   x = 1,151,153.33/1,078.34
6. Step 6: Final answer
   x = 1,067.53