Finding the Fourth Proportional to 1,074.96, 1,485.27 and 1,047.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074.96 : 1,485.27 = 1,047.30 : x
2. Step 2: Convert to fraction form
   1,074.96/1,485.27 = 1,047.30/x
3. Step 3: Cross multiply
   1,074.96x = 1,485.27 × 1,047.30
4. Step 4: Simplify right side
   1,074.96x = 1,555,523.27
5. Step 5: Solve for x
   x = 1,555,523.27/1,074.96
6. Step 6: Final answer
   x = 1,447.05