Finding the Fourth Proportional to 3,961.21, 5,940.06 and 1,187.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,961.21 : 5,940.06 = 1,187.37 : x
2. Step 2: Convert to fraction form
   3,961.21/5,940.06 = 1,187.37/x
3. Step 3: Cross multiply
   3,961.21x = 5,940.06 × 1,187.37
4. Step 4: Simplify right side
   3,961.21x = 7,053,049.04
5. Step 5: Solve for x
   x = 7,053,049.04/3,961.21
6. Step 6: Final answer
   x = 1,780.53