Finding the Fourth Proportional to 1,940.42, 2,678.27 and 1,243.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.42 : 2,678.27 = 1,243.01 : x
2. Step 2: Convert to fraction form
   1,940.42/2,678.27 = 1,243.01/x
3. Step 3: Cross multiply
   1,940.42x = 2,678.27 × 1,243.01
4. Step 4: Simplify right side
   1,940.42x = 3,329,096.79
5. Step 5: Solve for x
   x = 3,329,096.79/1,940.42
6. Step 6: Final answer
   x = 1,715.66