Finding the Fourth Proportional to 3,940.39, 5,910.69 and 1,018.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.39 : 5,910.69 = 1,018.69 : x
2. Step 2: Convert to fraction form
   3,940.39/5,910.69 = 1,018.69/x
3. Step 3: Cross multiply
   3,940.39x = 5,910.69 × 1,018.69
4. Step 4: Simplify right side
   3,940.39x = 6,021,146.02
5. Step 5: Solve for x
   x = 6,021,146.02/3,940.39
6. Step 6: Final answer
   x = 1,528.06