Finding the Fourth Proportional to 1,141.54, 1,575.27 and 669.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.54 : 1,575.27 = 669.37 : x
2. Step 2: Convert to fraction form
   1,141.54/1,575.27 = 669.37/x
3. Step 3: Cross multiply
   1,141.54x = 1,575.27 × 669.37
4. Step 4: Simplify right side
   1,141.54x = 1,054,438.48
5. Step 5: Solve for x
   x = 1,054,438.48/1,141.54
6. Step 6: Final answer
   x = 923.70