Finding the Fourth Proportional to 1,111.52, 1,533.98 and 669.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.52 : 1,533.98 = 669.41 : x
2. Step 2: Convert to fraction form
   1,111.52/1,533.98 = 669.41/x
3. Step 3: Cross multiply
   1,111.52x = 1,533.98 × 669.41
4. Step 4: Simplify right side
   1,111.52x = 1,026,865.39
5. Step 5: Solve for x
   x = 1,026,865.39/1,111.52
6. Step 6: Final answer
   x = 923.84