Finding the Fourth Proportional to 1,151.50, 1,725.69 and 630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.50 : 1,725.69 = 630.72 : x
2. Step 2: Convert to fraction form
   1,151.50/1,725.69 = 630.72/x
3. Step 3: Cross multiply
   1,151.50x = 1,725.69 × 630.72
4. Step 4: Simplify right side
   1,151.50x = 1,088,427.20
5. Step 5: Solve for x
   x = 1,088,427.20/1,151.50
6. Step 6: Final answer
   x = 945.23