Finding the Fourth Proportional to 1,374.72, 2,062.56 and 940.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.72 : 2,062.56 = 940.80 : x
2. Step 2: Convert to fraction form
   1,374.72/2,062.56 = 940.80/x
3. Step 3: Cross multiply
   1,374.72x = 2,062.56 × 940.80
4. Step 4: Simplify right side
   1,374.72x = 1,940,456.45
5. Step 5: Solve for x
   x = 1,940,456.45/1,374.72
6. Step 6: Final answer
   x = 1,411.53