Finding the Fourth Proportional to 1,162.83, 1,605.01 and 720.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.83 : 1,605.01 = 720.48 : x
2. Step 2: Convert to fraction form
   1,162.83/1,605.01 = 720.48/x
3. Step 3: Cross multiply
   1,162.83x = 1,605.01 × 720.48
4. Step 4: Simplify right side
   1,162.83x = 1,156,377.60
5. Step 5: Solve for x
   x = 1,156,377.60/1,162.83
6. Step 6: Final answer
   x = 994.45