Finding the Fourth Proportional to 1,017.18, 1,401.84 and 722.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.18 : 1,401.84 = 722.34 : x
2. Step 2: Convert to fraction form
   1,017.18/1,401.84 = 722.34/x
3. Step 3: Cross multiply
   1,017.18x = 1,401.84 × 722.34
4. Step 4: Simplify right side
   1,017.18x = 1,012,605.11
5. Step 5: Solve for x
   x = 1,012,605.11/1,017.18
6. Step 6: Final answer
   x = 995.50