Finding the Fourth Proportional to 1,047.72, 1,445.69 and 605.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.72 : 1,445.69 = 605.54 : x
2. Step 2: Convert to fraction form
   1,047.72/1,445.69 = 605.54/x
3. Step 3: Cross multiply
   1,047.72x = 1,445.69 × 605.54
4. Step 4: Simplify right side
   1,047.72x = 875,416.27
5. Step 5: Solve for x
   x = 875,416.27/1,047.72
6. Step 6: Final answer
   x = 835.55