Finding the Fourth Proportional to 1,445.28, 1,993.89 and 1,068.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.28 : 1,993.89 = 1,068.06 : x
2. Step 2: Convert to fraction form
   1,445.28/1,993.89 = 1,068.06/x
3. Step 3: Cross multiply
   1,445.28x = 1,993.89 × 1,068.06
4. Step 4: Simplify right side
   1,445.28x = 2,129,605.64
5. Step 5: Solve for x
   x = 2,129,605.64/1,445.28
6. Step 6: Final answer
   x = 1,473.49