Finding the Fourth Proportional to 1,141.08, 1,574.72 and 669.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.08 : 1,574.72 = 669.34 : x
2. Step 2: Convert to fraction form
   1,141.08/1,574.72 = 669.34/x
3. Step 3: Cross multiply
   1,141.08x = 1,574.72 × 669.34
4. Step 4: Simplify right side
   1,141.08x = 1,054,017.91
5. Step 5: Solve for x
   x = 1,054,017.91/1,141.08
6. Step 6: Final answer
   x = 923.70