Finding the Fourth Proportional to 1,071.63, 1,478.82 and 599.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.63 : 1,478.82 = 599.55 : x
2. Step 2: Convert to fraction form
   1,071.63/1,478.82 = 599.55/x
3. Step 3: Cross multiply
   1,071.63x = 1,478.82 × 599.55
4. Step 4: Simplify right side
   1,071.63x = 886,626.53
5. Step 5: Solve for x
   x = 886,626.53/1,071.63
6. Step 6: Final answer
   x = 827.36