Finding the Fourth Proportional to 1,045.80, 1,443.25 and 626.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.80 : 1,443.25 = 626.22 : x
2. Step 2: Convert to fraction form
   1,045.80/1,443.25 = 626.22/x
3. Step 3: Cross multiply
   1,045.80x = 1,443.25 × 626.22
4. Step 4: Simplify right side
   1,045.80x = 903,792.02
5. Step 5: Solve for x
   x = 903,792.02/1,045.80
6. Step 6: Final answer
   x = 864.21