Finding the Fourth Proportional to 1,071.40, 1,478.52 and 605.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.40 : 1,478.52 = 605.62 : x
2. Step 2: Convert to fraction form
   1,071.40/1,478.52 = 605.62/x
3. Step 3: Cross multiply
   1,071.40x = 1,478.52 × 605.62
4. Step 4: Simplify right side
   1,071.40x = 895,421.28
5. Step 5: Solve for x
   x = 895,421.28/1,071.40
6. Step 6: Final answer
   x = 835.75