Finding the Fourth Proportional to 1,096.83, 1,513.12 and 630.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.83 : 1,513.12 = 630.81 : x
2. Step 2: Convert to fraction form
   1,096.83/1,513.12 = 630.81/x
3. Step 3: Cross multiply
   1,096.83x = 1,513.12 × 630.81
4. Step 4: Simplify right side
   1,096.83x = 954,495.01
5. Step 5: Solve for x
   x = 954,495.01/1,096.83
6. Step 6: Final answer
   x = 870.23