Finding the Fourth Proportional to 1,071.03, 1,478.06 and 605.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.03 : 1,478.06 = 605.31 : x
2. Step 2: Convert to fraction form
   1,071.03/1,478.06 = 605.31/x
3. Step 3: Cross multiply
   1,071.03x = 1,478.06 × 605.31
4. Step 4: Simplify right side
   1,071.03x = 894,681.47
5. Step 5: Solve for x
   x = 894,681.47/1,071.03
6. Step 6: Final answer
   x = 835.35