Finding the Fourth Proportional to 1,716.50, 2,368.78 and 1,018.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,716.50 : 2,368.78 = 1,018.28 : x
2. Step 2: Convert to fraction form
   1,716.50/2,368.78 = 1,018.28/x
3. Step 3: Cross multiply
   1,716.50x = 2,368.78 × 1,018.28
4. Step 4: Simplify right side
   1,716.50x = 2,412,081.30
5. Step 5: Solve for x
   x = 2,412,081.30/1,716.50
6. Step 6: Final answer
   x = 1,405.23