Finding the Fourth Proportional to 2,092.84, 3,139.56 and 922.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,092.84 : 3,139.56 = 922.79 : x
2. Step 2: Convert to fraction form
   2,092.84/3,139.56 = 922.79/x
3. Step 3: Cross multiply
   2,092.84x = 3,139.56 × 922.79
4. Step 4: Simplify right side
   2,092.84x = 2,897,162.42
5. Step 5: Solve for x
   x = 2,897,162.42/2,092.84
6. Step 6: Final answer
   x = 1,384.32