Finding the Fourth Proportional to 3,938.31, 5,907.50 and 2,293.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.31 : 5,907.50 = 2,293.80 : x
2. Step 2: Convert to fraction form
   3,938.31/5,907.50 = 2,293.80/x
3. Step 3: Cross multiply
   3,938.31x = 5,907.50 × 2,293.80
4. Step 4: Simplify right side
   3,938.31x = 13,550,612.03
5. Step 5: Solve for x
   x = 13,550,612.03/3,938.31
6. Step 6: Final answer
   x = 3,440.72