Finding the Fourth Proportional to 1,019.58, 1,519.68 and 1,017.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.58 : 1,519.68 = 1,017.96 : x
2. Step 2: Convert to fraction form
   1,019.58/1,519.68 = 1,017.96/x
3. Step 3: Cross multiply
   1,019.58x = 1,519.68 × 1,017.96
4. Step 4: Simplify right side
   1,019.58x = 1,546,973.45
5. Step 5: Solve for x
   x = 1,546,973.45/1,019.58
6. Step 6: Final answer
   x = 1,517.27