Finding the Fourth Proportional to 1,047.42, 1,444.94 and 648.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.42 : 1,444.94 = 648.74 : x
2. Step 2: Convert to fraction form
   1,047.42/1,444.94 = 648.74/x
3. Step 3: Cross multiply
   1,047.42x = 1,444.94 × 648.74
4. Step 4: Simplify right side
   1,047.42x = 937,390.38
5. Step 5: Solve for x
   x = 937,390.38/1,047.42
6. Step 6: Final answer
   x = 894.95