Finding the Fourth Proportional to 1,064.76, 1,469.46 and 616.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.76 : 1,469.46 = 616.68 : x
2. Step 2: Convert to fraction form
   1,064.76/1,469.46 = 616.68/x
3. Step 3: Cross multiply
   1,064.76x = 1,469.46 × 616.68
4. Step 4: Simplify right side
   1,064.76x = 906,186.59
5. Step 5: Solve for x
   x = 906,186.59/1,064.76
6. Step 6: Final answer
   x = 851.07