Finding the Fourth Proportional to 1,054.49, 1,451.84 and 888.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.49 : 1,451.84 = 888.30 : x
2. Step 2: Convert to fraction form
   1,054.49/1,451.84 = 888.30/x
3. Step 3: Cross multiply
   1,054.49x = 1,451.84 × 888.30
4. Step 4: Simplify right side
   1,054.49x = 1,289,665.03
5. Step 5: Solve for x
   x = 1,289,665.03/1,054.49
6. Step 6: Final answer
   x = 1,223.03