Finding the Fourth Proportional to 3,940.78, 5,907.12 and 1,341.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.78 : 5,907.12 = 1,341.76 : x
2. Step 2: Convert to fraction form
   3,940.78/5,907.12 = 1,341.76/x
3. Step 3: Cross multiply
   3,940.78x = 5,907.12 × 1,341.76
4. Step 4: Simplify right side
   3,940.78x = 7,925,937.33
5. Step 5: Solve for x
   x = 7,925,937.33/3,940.78
6. Step 6: Final answer
   x = 2,011.26