Finding the Fourth Proportional to 1,162.84, 1,604.10 and 720.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.84 : 1,604.10 = 720.28 : x
2. Step 2: Convert to fraction form
   1,162.84/1,604.10 = 720.28/x
3. Step 3: Cross multiply
   1,162.84x = 1,604.10 × 720.28
4. Step 4: Simplify right side
   1,162.84x = 1,155,401.15
5. Step 5: Solve for x
   x = 1,155,401.15/1,162.84
6. Step 6: Final answer
   x = 993.60