Finding the Fourth Proportional to 1,642.72, 2,266.32 and 1,119.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.72 : 2,266.32 = 1,119.20 : x
2. Step 2: Convert to fraction form
   1,642.72/2,266.32 = 1,119.20/x
3. Step 3: Cross multiply
   1,642.72x = 2,266.32 × 1,119.20
4. Step 4: Simplify right side
   1,642.72x = 2,536,465.34
5. Step 5: Solve for x
   x = 2,536,465.34/1,642.72
6. Step 6: Final answer
   x = 1,544.06