Finding the Fourth Proportional to 1,096.40, 1,513.31 and 624.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.40 : 1,513.31 = 624.56 : x
2. Step 2: Convert to fraction form
   1,096.40/1,513.31 = 624.56/x
3. Step 3: Cross multiply
   1,096.40x = 1,513.31 × 624.56
4. Step 4: Simplify right side
   1,096.40x = 945,152.89
5. Step 5: Solve for x
   x = 945,152.89/1,096.40
6. Step 6: Final answer
   x = 862.06