Finding the Fourth Proportional to 1,084.38, 1,616.16 and 1,062.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.38 : 1,616.16 = 1,062.78 : x
2. Step 2: Convert to fraction form
   1,084.38/1,616.16 = 1,062.78/x
3. Step 3: Cross multiply
   1,084.38x = 1,616.16 × 1,062.78
4. Step 4: Simplify right side
   1,084.38x = 1,717,622.52
5. Step 5: Solve for x
   x = 1,717,622.52/1,084.38
6. Step 6: Final answer
   x = 1,583.97