Finding the Fourth Proportional to 1,045.97, 1,443.15 and 626.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.97 : 1,443.15 = 626.15 : x
2. Step 2: Convert to fraction form
   1,045.97/1,443.15 = 626.15/x
3. Step 3: Cross multiply
   1,045.97x = 1,443.15 × 626.15
4. Step 4: Simplify right side
   1,045.97x = 903,621.16
5. Step 5: Solve for x
   x = 903,621.16/1,045.97
6. Step 6: Final answer
   x = 863.91