Finding the Fourth Proportional to 1,669.78, 2,304.42 and 923.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.78 : 2,304.42 = 923.82 : x
2. Step 2: Convert to fraction form
   1,669.78/2,304.42 = 923.82/x
3. Step 3: Cross multiply
   1,669.78x = 2,304.42 × 923.82
4. Step 4: Simplify right side
   1,669.78x = 2,128,869.28
5. Step 5: Solve for x
   x = 2,128,869.28/1,669.78
6. Step 6: Final answer
   x = 1,274.94