Finding the Fourth Proportional to 1,116.73, 1,542.57 and 930.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.73 : 1,542.57 = 930.83 : x
2. Step 2: Convert to fraction form
   1,116.73/1,542.57 = 930.83/x
3. Step 3: Cross multiply
   1,116.73x = 1,542.57 × 930.83
4. Step 4: Simplify right side
   1,116.73x = 1,435,874.29
5. Step 5: Solve for x
   x = 1,435,874.29/1,116.73
6. Step 6: Final answer
   x = 1,285.79