Finding the Fourth Proportional to 1,047.55, 1,445.58 and 605.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.55 : 1,445.58 = 605.42 : x
2. Step 2: Convert to fraction form
   1,047.55/1,445.58 = 605.42/x
3. Step 3: Cross multiply
   1,047.55x = 1,445.58 × 605.42
4. Step 4: Simplify right side
   1,047.55x = 875,180.02
5. Step 5: Solve for x
   x = 875,180.02/1,047.55
6. Step 6: Final answer
   x = 835.45