Finding the Fourth Proportional to 1,047.31, 1,444.88 and 627.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.31 : 1,444.88 = 627.67 : x
2. Step 2: Convert to fraction form
   1,047.31/1,444.88 = 627.67/x
3. Step 3: Cross multiply
   1,047.31x = 1,444.88 × 627.67
4. Step 4: Simplify right side
   1,047.31x = 906,904.69
5. Step 5: Solve for x
   x = 906,904.69/1,047.31
6. Step 6: Final answer
   x = 865.94