Finding the Fourth Proportional to 1,050.27, 1,448.74 and 630.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.27 : 1,448.74 = 630.48 : x
2. Step 2: Convert to fraction form
   1,050.27/1,448.74 = 630.48/x
3. Step 3: Cross multiply
   1,050.27x = 1,448.74 × 630.48
4. Step 4: Simplify right side
   1,050.27x = 913,401.60
5. Step 5: Solve for x
   x = 913,401.60/1,050.27
6. Step 6: Final answer
   x = 869.68