Finding the Fourth Proportional to 1,445.98, 1,995.33 and 816.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.98 : 1,995.33 = 816.66 : x
2. Step 2: Convert to fraction form
   1,445.98/1,995.33 = 816.66/x
3. Step 3: Cross multiply
   1,445.98x = 1,995.33 × 816.66
4. Step 4: Simplify right side
   1,445.98x = 1,629,503.25
5. Step 5: Solve for x
   x = 1,629,503.25/1,445.98
6. Step 6: Final answer
   x = 1,126.92