Finding the Fourth Proportional to 1,071.56, 1,478.64 and 605.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.56 : 1,478.64 = 605.96 : x
2. Step 2: Convert to fraction form
   1,071.56/1,478.64 = 605.96/x
3. Step 3: Cross multiply
   1,071.56x = 1,478.64 × 605.96
4. Step 4: Simplify right side
   1,071.56x = 895,996.69
5. Step 5: Solve for x
   x = 895,996.69/1,071.56
6. Step 6: Final answer
   x = 836.16