Finding the Fourth Proportional to 1,386.38, 2,076.89 and 1,092.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.38 : 2,076.89 = 1,092.33 : x
2. Step 2: Convert to fraction form
   1,386.38/2,076.89 = 1,092.33/x
3. Step 3: Cross multiply
   1,386.38x = 2,076.89 × 1,092.33
4. Step 4: Simplify right side
   1,386.38x = 2,268,643.79
5. Step 5: Solve for x
   x = 2,268,643.79/1,386.38
6. Step 6: Final answer
   x = 1,636.38