Finding the Fourth Proportional to 3,939.89, 5,910.43 and 1,342.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939.89 : 5,910.43 = 1,342.22 : x
2. Step 2: Convert to fraction form
   3,939.89/5,910.43 = 1,342.22/x
3. Step 3: Cross multiply
   3,939.89x = 5,910.43 × 1,342.22
4. Step 4: Simplify right side
   3,939.89x = 7,933,097.35
5. Step 5: Solve for x
   x = 7,933,097.35/3,939.89
6. Step 6: Final answer
   x = 2,013.53