Finding the Fourth Proportional to 1,111.49, 1,533.75 and 669.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.49 : 1,533.75 = 669.32 : x
2. Step 2: Convert to fraction form
   1,111.49/1,533.75 = 669.32/x
3. Step 3: Cross multiply
   1,111.49x = 1,533.75 × 669.32
4. Step 4: Simplify right side
   1,111.49x = 1,026,566.20
5. Step 5: Solve for x
   x = 1,026,566.20/1,111.49
6. Step 6: Final answer
   x = 923.59