Finding the Fourth Proportional to 1,096.77, 1,513.58 and 624.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.77 : 1,513.58 = 624.70 : x
2. Step 2: Convert to fraction form
   1,096.77/1,513.58 = 624.70/x
3. Step 3: Cross multiply
   1,096.77x = 1,513.58 × 624.70
4. Step 4: Simplify right side
   1,096.77x = 945,533.43
5. Step 5: Solve for x
   x = 945,533.43/1,096.77
6. Step 6: Final answer
   x = 862.11