Finding the Fourth Proportional to 1,108, 1,528.50 and 887.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108 : 1,528.50 = 887.23 : x
2. Step 2: Convert to fraction form
   1,108/1,528.50 = 887.23/x
3. Step 3: Cross multiply
   1,108x = 1,528.50 × 887.23
4. Step 4: Simplify right side
   1,108x = 1,356,131.06
5. Step 5: Solve for x
   x = 1,356,131.06/1,108
6. Step 6: Final answer
   x = 1,223.94