Finding the Fourth Proportional to 1,111.53, 1,533.56 and 669.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.53 : 1,533.56 = 669.27 : x
2. Step 2: Convert to fraction form
   1,111.53/1,533.56 = 669.27/x
3. Step 3: Cross multiply
   1,111.53x = 1,533.56 × 669.27
4. Step 4: Simplify right side
   1,111.53x = 1,026,365.70
5. Step 5: Solve for x
   x = 1,026,365.70/1,111.53
6. Step 6: Final answer
   x = 923.38