Finding the Fourth Proportional to 3,940.32, 5,910.86 and 1,307.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.32 : 5,910.86 = 1,307.27 : x
2. Step 2: Convert to fraction form
   3,940.32/5,910.86 = 1,307.27/x
3. Step 3: Cross multiply
   3,940.32x = 5,910.86 × 1,307.27
4. Step 4: Simplify right side
   3,940.32x = 7,727,058.76
5. Step 5: Solve for x
   x = 7,727,058.76/3,940.32
6. Step 6: Final answer
   x = 1,961.02