Finding the Fourth Proportional to 1,046.40, 1,443.56 and 626.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.40 : 1,443.56 = 626.32 : x
2. Step 2: Convert to fraction form
   1,046.40/1,443.56 = 626.32/x
3. Step 3: Cross multiply
   1,046.40x = 1,443.56 × 626.32
4. Step 4: Simplify right side
   1,046.40x = 904,130.50
5. Step 5: Solve for x
   x = 904,130.50/1,046.40
6. Step 6: Final answer
   x = 864.04