Finding the Fourth Proportional to 2,090.27, 3,136.07 and 1,258.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.27 : 3,136.07 = 1,258.24 : x
2. Step 2: Convert to fraction form
   2,090.27/3,136.07 = 1,258.24/x
3. Step 3: Cross multiply
   2,090.27x = 3,136.07 × 1,258.24
4. Step 4: Simplify right side
   2,090.27x = 3,945,928.72
5. Step 5: Solve for x
   x = 3,945,928.72/2,090.27
6. Step 6: Final answer
   x = 1,887.76