Finding the Fourth Proportional to 2,090.28, 3,131.51 and 1,049.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.28 : 3,131.51 = 1,049.06 : x
2. Step 2: Convert to fraction form
   2,090.28/3,131.51 = 1,049.06/x
3. Step 3: Cross multiply
   2,090.28x = 3,131.51 × 1,049.06
4. Step 4: Simplify right side
   2,090.28x = 3,285,141.88
5. Step 5: Solve for x
   x = 3,285,141.88/2,090.28
6. Step 6: Final answer
   x = 1,571.63