Finding the Fourth Proportional to 1,047.42, 1,445.69 and 605.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.42 : 1,445.69 = 605.25 : x
2. Step 2: Convert to fraction form
   1,047.42/1,445.69 = 605.25/x
3. Step 3: Cross multiply
   1,047.42x = 1,445.69 × 605.25
4. Step 4: Simplify right side
   1,047.42x = 875,003.87
5. Step 5: Solve for x
   x = 875,003.87/1,047.42
6. Step 6: Final answer
   x = 835.39