Finding the Fourth Proportional to 1,445.88, 2,168.73 and 828.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.88 : 2,168.73 = 828.03 : x
2. Step 2: Convert to fraction form
   1,445.88/2,168.73 = 828.03/x
3. Step 3: Cross multiply
   1,445.88x = 2,168.73 × 828.03
4. Step 4: Simplify right side
   1,445.88x = 1,795,773.50
5. Step 5: Solve for x
   x = 1,795,773.50/1,445.88
6. Step 6: Final answer
   x = 1,241.99