Finding the Fourth Proportional to 1,096.71, 1,513.40 and 624.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.71 : 1,513.40 = 624.54 : x
2. Step 2: Convert to fraction form
   1,096.71/1,513.40 = 624.54/x
3. Step 3: Cross multiply
   1,096.71x = 1,513.40 × 624.54
4. Step 4: Simplify right side
   1,096.71x = 945,181.39
5. Step 5: Solve for x
   x = 945,181.39/1,096.71
6. Step 6: Final answer
   x = 861.84