Finding the Fourth Proportional to 1,445.50, 1,994.67 and 816.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.50 : 1,994.67 = 816.18 : x
2. Step 2: Convert to fraction form
   1,445.50/1,994.67 = 816.18/x
3. Step 3: Cross multiply
   1,445.50x = 1,994.67 × 816.18
4. Step 4: Simplify right side
   1,445.50x = 1,627,999.79
5. Step 5: Solve for x
   x = 1,627,999.79/1,445.50
6. Step 6: Final answer
   x = 1,126.25