Finding the Fourth Proportional to 1,552.74, 2,142.90 and 923.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.74 : 2,142.90 = 923.46 : x
2. Step 2: Convert to fraction form
   1,552.74/2,142.90 = 923.46/x
3. Step 3: Cross multiply
   1,552.74x = 2,142.90 × 923.46
4. Step 4: Simplify right side
   1,552.74x = 1,978,882.43
5. Step 5: Solve for x
   x = 1,978,882.43/1,552.74
6. Step 6: Final answer
   x = 1,274.45