Finding the Fourth Proportional to 1,152.28, 1,589.96 and 648.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.28 : 1,589.96 = 648.03 : x
2. Step 2: Convert to fraction form
   1,152.28/1,589.96 = 648.03/x
3. Step 3: Cross multiply
   1,152.28x = 1,589.96 × 648.03
4. Step 4: Simplify right side
   1,152.28x = 1,030,338.54
5. Step 5: Solve for x
   x = 1,030,338.54/1,152.28
6. Step 6: Final answer
   x = 894.18