Finding the Fourth Proportional to 1,050.97, 1,450.27 and 631.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.97 : 1,450.27 = 631.07 : x
2. Step 2: Convert to fraction form
   1,050.97/1,450.27 = 631.07/x
3. Step 3: Cross multiply
   1,050.97x = 1,450.27 × 631.07
4. Step 4: Simplify right side
   1,050.97x = 915,221.89
5. Step 5: Solve for x
   x = 915,221.89/1,050.97
6. Step 6: Final answer
   x = 870.84