Finding the Fourth Proportional to 3,890.34, 5,835.42 and 1,293.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,890.34 : 5,835.42 = 1,293.30 : x
2. Step 2: Convert to fraction form
   3,890.34/5,835.42 = 1,293.30/x
3. Step 3: Cross multiply
   3,890.34x = 5,835.42 × 1,293.30
4. Step 4: Simplify right side
   3,890.34x = 7,546,948.69
5. Step 5: Solve for x
   x = 7,546,948.69/3,890.34
6. Step 6: Final answer
   x = 1,939.92