Finding the Fourth Proportional to 2,877.30, 3,968.22 and 2,431.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.30 : 3,968.22 = 2,431.34 : x
2. Step 2: Convert to fraction form
   2,877.30/3,968.22 = 2,431.34/x
3. Step 3: Cross multiply
   2,877.30x = 3,968.22 × 2,431.34
4. Step 4: Simplify right side
   2,877.30x = 9,648,092.01
5. Step 5: Solve for x
   x = 9,648,092.01/2,877.30
6. Step 6: Final answer
   x = 3,353.18