Finding the Fourth Proportional to 1,192.52, 1,645.71 and 668.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,192.52 : 1,645.71 = 668.54 : x
2. Step 2: Convert to fraction form
   1,192.52/1,645.71 = 668.54/x
3. Step 3: Cross multiply
   1,192.52x = 1,645.71 × 668.54
4. Step 4: Simplify right side
   1,192.52x = 1,100,222.96
5. Step 5: Solve for x
   x = 1,100,222.96/1,192.52
6. Step 6: Final answer
   x = 922.60