Finding the Fourth Proportional to 1,043.69, 1,440.59 and 624.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,043.69 : 1,440.59 = 624.17 : x
2. Step 2: Convert to fraction form
   1,043.69/1,440.59 = 624.17/x
3. Step 3: Cross multiply
   1,043.69x = 1,440.59 × 624.17
4. Step 4: Simplify right side
   1,043.69x = 899,173.54
5. Step 5: Solve for x
   x = 899,173.54/1,043.69
6. Step 6: Final answer
   x = 861.54