Finding the Fourth Proportional to 3,145.31, 4,713.90 and 1,294.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,145.31 : 4,713.90 = 1,294.33 : x
2. Step 2: Convert to fraction form
   3,145.31/4,713.90 = 1,294.33/x
3. Step 3: Cross multiply
   3,145.31x = 4,713.90 × 1,294.33
4. Step 4: Simplify right side
   3,145.31x = 6,101,335.72
5. Step 5: Solve for x
   x = 6,101,335.72/3,145.31
6. Step 6: Final answer
   x = 1,939.82