Finding the Fourth Proportional to 1,408.43, 1,945.61 and 1,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.43 : 1,945.61 = 1,017.50 : x
2. Step 2: Convert to fraction form
   1,408.43/1,945.61 = 1,017.50/x
3. Step 3: Cross multiply
   1,408.43x = 1,945.61 × 1,017.50
4. Step 4: Simplify right side
   1,408.43x = 1,979,643.36
5. Step 5: Solve for x
   x = 1,979,643.36/1,408.43
6. Step 6: Final answer
   x = 1,405.57