Finding the Fourth Proportional to 1,096.98, 1,513.69 and 624.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.98 : 1,513.69 = 624.70 : x
2. Step 2: Convert to fraction form
   1,096.98/1,513.69 = 624.70/x
3. Step 3: Cross multiply
   1,096.98x = 1,513.69 × 624.70
4. Step 4: Simplify right side
   1,096.98x = 945,602.14
5. Step 5: Solve for x
   x = 945,602.14/1,096.98
6. Step 6: Final answer
   x = 862.00