Finding the Fourth Proportional to 2,105.46, 3,156.63 and 994.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.46 : 3,156.63 = 994.26 : x
2. Step 2: Convert to fraction form
   2,105.46/3,156.63 = 994.26/x
3. Step 3: Cross multiply
   2,105.46x = 3,156.63 × 994.26
4. Step 4: Simplify right side
   2,105.46x = 3,138,510.94
5. Step 5: Solve for x
   x = 3,138,510.94/2,105.46
6. Step 6: Final answer
   x = 1,490.65