Finding the Fourth Proportional to 1,940.77, 2,922.49 and 1,396.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.77 : 2,922.49 = 1,396.72 : x
2. Step 2: Convert to fraction form
   1,940.77/2,922.49 = 1,396.72/x
3. Step 3: Cross multiply
   1,940.77x = 2,922.49 × 1,396.72
4. Step 4: Simplify right side
   1,940.77x = 4,081,900.23
5. Step 5: Solve for x
   x = 4,081,900.23/1,940.77
6. Step 6: Final answer
   x = 2,103.24