Finding the Fourth Proportional to 2,090.54, 3,131.88 and 1,049.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.54 : 3,131.88 = 1,049.31 : x
2. Step 2: Convert to fraction form
   2,090.54/3,131.88 = 1,049.31/x
3. Step 3: Cross multiply
   2,090.54x = 3,131.88 × 1,049.31
4. Step 4: Simplify right side
   2,090.54x = 3,286,313.00
5. Step 5: Solve for x
   x = 3,286,313.00/2,090.54
6. Step 6: Final answer
   x = 1,572.00