Finding the Fourth Proportional to 1,940.70, 2,678.22 and 1,101.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.70 : 2,678.22 = 1,101.30 : x
2. Step 2: Convert to fraction form
   1,940.70/2,678.22 = 1,101.30/x
3. Step 3: Cross multiply
   1,940.70x = 2,678.22 × 1,101.30
4. Step 4: Simplify right side
   1,940.70x = 2,949,523.69
5. Step 5: Solve for x
   x = 2,949,523.69/1,940.70
6. Step 6: Final answer
   x = 1,519.82