Finding the Fourth Proportional to 2,060.31, 3,090.51 and 1,239.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,060.31 : 3,090.51 = 1,239.27 : x
2. Step 2: Convert to fraction form
   2,060.31/3,090.51 = 1,239.27/x
3. Step 3: Cross multiply
   2,060.31x = 3,090.51 × 1,239.27
4. Step 4: Simplify right side
   2,060.31x = 3,829,976.33
5. Step 5: Solve for x
   x = 3,829,976.33/2,060.31
6. Step 6: Final answer
   x = 1,858.93