Finding the Fourth Proportional to 1,116.81, 1,673.06 and 630.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.81 : 1,673.06 = 630.81 : x
2. Step 2: Convert to fraction form
   1,116.81/1,673.06 = 630.81/x
3. Step 3: Cross multiply
   1,116.81x = 1,673.06 × 630.81
4. Step 4: Simplify right side
   1,116.81x = 1,055,379.82
5. Step 5: Solve for x
   x = 1,055,379.82/1,116.81
6. Step 6: Final answer
   x = 944.99