Finding the Fourth Proportional to 1,049.92, 1,448.37 and 630.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.92 : 1,448.37 = 630.07 : x
2. Step 2: Convert to fraction form
   1,049.92/1,448.37 = 630.07/x
3. Step 3: Cross multiply
   1,049.92x = 1,448.37 × 630.07
4. Step 4: Simplify right side
   1,049.92x = 912,570.86
5. Step 5: Solve for x
   x = 912,570.86/1,049.92
6. Step 6: Final answer
   x = 869.18