Finding the Fourth Proportional to 1,976.78, 2,727.92 and 1,092.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.78 : 2,727.92 = 1,092.57 : x
2. Step 2: Convert to fraction form
   1,976.78/2,727.92 = 1,092.57/x
3. Step 3: Cross multiply
   1,976.78x = 2,727.92 × 1,092.57
4. Step 4: Simplify right side
   1,976.78x = 2,980,443.55
5. Step 5: Solve for x
   x = 2,980,443.55/1,976.78
6. Step 6: Final answer
   x = 1,507.73