Finding the Fourth Proportional to 1,045.98, 1,443.29 and 648.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.98 : 1,443.29 = 648.27 : x
2. Step 2: Convert to fraction form
   1,045.98/1,443.29 = 648.27/x
3. Step 3: Cross multiply
   1,045.98x = 1,443.29 × 648.27
4. Step 4: Simplify right side
   1,045.98x = 935,638.37
5. Step 5: Solve for x
   x = 935,638.37/1,045.98
6. Step 6: Final answer
   x = 894.51