Finding the Fourth Proportional to 3,940.82, 5,437.82 and 2,262.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.82 : 5,437.82 = 2,262.30 : x
2. Step 2: Convert to fraction form
   3,940.82/5,437.82 = 2,262.30/x
3. Step 3: Cross multiply
   3,940.82x = 5,437.82 × 2,262.30
4. Step 4: Simplify right side
   3,940.82x = 12,301,980.19
5. Step 5: Solve for x
   x = 12,301,980.19/3,940.82
6. Step 6: Final answer
   x = 3,121.68