Finding the Fourth Proportional to 1,128.92, 1,694.82 and 616.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128.92 : 1,694.82 = 616.28 : x
2. Step 2: Convert to fraction form
   1,128.92/1,694.82 = 616.28/x
3. Step 3: Cross multiply
   1,128.92x = 1,694.82 × 616.28
4. Step 4: Simplify right side
   1,128.92x = 1,044,483.67
5. Step 5: Solve for x
   x = 1,044,483.67/1,128.92
6. Step 6: Final answer
   x = 925.21