Finding the Fourth Proportional to 1,096.42, 1,513.20 and 630.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.42 : 1,513.20 = 630.67 : x
2. Step 2: Convert to fraction form
   1,096.42/1,513.20 = 630.67/x
3. Step 3: Cross multiply
   1,096.42x = 1,513.20 × 630.67
4. Step 4: Simplify right side
   1,096.42x = 954,329.84
5. Step 5: Solve for x
   x = 954,329.84/1,096.42
6. Step 6: Final answer
   x = 870.41