Finding the Fourth Proportional to 2,090.64, 3,133.92 and 994.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.64 : 3,133.92 = 994.71 : x
2. Step 2: Convert to fraction form
   2,090.64/3,133.92 = 994.71/x
3. Step 3: Cross multiply
   2,090.64x = 3,133.92 × 994.71
4. Step 4: Simplify right side
   2,090.64x = 3,117,341.56
5. Step 5: Solve for x
   x = 3,117,341.56/2,090.64
6. Step 6: Final answer
   x = 1,491.09