Finding the Fourth Proportional to 1,117.38, 1,674.72 and 630.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117.38 : 1,674.72 = 630.30 : x
2. Step 2: Convert to fraction form
   1,117.38/1,674.72 = 630.30/x
3. Step 3: Cross multiply
   1,117.38x = 1,674.72 × 630.30
4. Step 4: Simplify right side
   1,117.38x = 1,055,576.02
5. Step 5: Solve for x
   x = 1,055,576.02/1,117.38
6. Step 6: Final answer
   x = 944.69