Finding the Fourth Proportional to 1,445.52, 1,994.69 and 816.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.52 : 1,994.69 = 816.07 : x
2. Step 2: Convert to fraction form
   1,445.52/1,994.69 = 816.07/x
3. Step 3: Cross multiply
   1,445.52x = 1,994.69 × 816.07
4. Step 4: Simplify right side
   1,445.52x = 1,627,813.70
5. Step 5: Solve for x
   x = 1,627,813.70/1,445.52
6. Step 6: Final answer
   x = 1,126.11