Finding the Fourth Proportional to 1,096.69, 1,513.46 and 624.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.69 : 1,513.46 = 624.55 : x
2. Step 2: Convert to fraction form
   1,096.69/1,513.46 = 624.55/x
3. Step 3: Cross multiply
   1,096.69x = 1,513.46 × 624.55
4. Step 4: Simplify right side
   1,096.69x = 945,228.32
5. Step 5: Solve for x
   x = 945,228.32/1,096.69
6. Step 6: Final answer
   x = 861.89