Finding the Fourth Proportional to 2,092.72, 3,138.53 and 994.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,092.72 : 3,138.53 = 994.90 : x
2. Step 2: Convert to fraction form
   2,092.72/3,138.53 = 994.90/x
3. Step 3: Cross multiply
   2,092.72x = 3,138.53 × 994.90
4. Step 4: Simplify right side
   2,092.72x = 3,122,523.50
5. Step 5: Solve for x
   x = 3,122,523.50/2,092.72
6. Step 6: Final answer
   x = 1,492.09