Finding the Fourth Proportional to 1,648.23, 2,274.42 and 940.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.23 : 2,274.42 = 940.10 : x
2. Step 2: Convert to fraction form
   1,648.23/2,274.42 = 940.10/x
3. Step 3: Cross multiply
   1,648.23x = 2,274.42 × 940.10
4. Step 4: Simplify right side
   1,648.23x = 2,138,170.87
5. Step 5: Solve for x
   x = 2,138,170.87/1,648.23
6. Step 6: Final answer
   x = 1,297.25