Finding the Fourth Proportional to 2,093.20, 3,139.82 and 922.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.20 : 3,139.82 = 922.94 : x
2. Step 2: Convert to fraction form
   2,093.20/3,139.82 = 922.94/x
3. Step 3: Cross multiply
   2,093.20x = 3,139.82 × 922.94
4. Step 4: Simplify right side
   2,093.20x = 2,897,865.47
5. Step 5: Solve for x
   x = 2,897,865.47/2,093.20
6. Step 6: Final answer
   x = 1,384.42