Finding the Fourth Proportional to 1,181.27, 1,630.27 and 657.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.27 : 1,630.27 = 657.30 : x
2. Step 2: Convert to fraction form
   1,181.27/1,630.27 = 657.30/x
3. Step 3: Cross multiply
   1,181.27x = 1,630.27 × 657.30
4. Step 4: Simplify right side
   1,181.27x = 1,071,568.32
5. Step 5: Solve for x
   x = 1,071,568.32/1,181.27
6. Step 6: Final answer
   x = 907.14