Finding the Fourth Proportional to 1,445.66, 1,994.89 and 816.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.66 : 1,994.89 = 816.26 : x
2. Step 2: Convert to fraction form
   1,445.66/1,994.89 = 816.26/x
3. Step 3: Cross multiply
   1,445.66x = 1,994.89 × 816.26
4. Step 4: Simplify right side
   1,445.66x = 1,628,334.86
5. Step 5: Solve for x
   x = 1,628,334.86/1,445.66
6. Step 6: Final answer
   x = 1,126.36