Finding the Fourth Proportional to 1,047.25, 1,445.46 and 605.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.25 : 1,445.46 = 605.43 : x
2. Step 2: Convert to fraction form
   1,047.25/1,445.46 = 605.43/x
3. Step 3: Cross multiply
   1,047.25x = 1,445.46 × 605.43
4. Step 4: Simplify right side
   1,047.25x = 875,117.62
5. Step 5: Solve for x
   x = 875,117.62/1,047.25
6. Step 6: Final answer
   x = 835.64