Finding the Fourth Proportional to 1,071.28, 1,478.12 and 605.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.28 : 1,478.12 = 605.52 : x
2. Step 2: Convert to fraction form
   1,071.28/1,478.12 = 605.52/x
3. Step 3: Cross multiply
   1,071.28x = 1,478.12 × 605.52
4. Step 4: Simplify right side
   1,071.28x = 895,031.22
5. Step 5: Solve for x
   x = 895,031.22/1,071.28
6. Step 6: Final answer
   x = 835.48