Finding the Fourth Proportional to 1,050.21, 1,449.24 and 630.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.21 : 1,449.24 = 630.33 : x
2. Step 2: Convert to fraction form
   1,050.21/1,449.24 = 630.33/x
3. Step 3: Cross multiply
   1,050.21x = 1,449.24 × 630.33
4. Step 4: Simplify right side
   1,050.21x = 913,499.45
5. Step 5: Solve for x
   x = 913,499.45/1,050.21
6. Step 6: Final answer
   x = 869.83