Finding the Fourth Proportional to 1,638.04, 2,452.72 and 1,350.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638.04 : 2,452.72 = 1,350.76 : x
2. Step 2: Convert to fraction form
   1,638.04/2,452.72 = 1,350.76/x
3. Step 3: Cross multiply
   1,638.04x = 2,452.72 × 1,350.76
4. Step 4: Simplify right side
   1,638.04x = 3,313,036.07
5. Step 5: Solve for x
   x = 3,313,036.07/1,638.04
6. Step 6: Final answer
   x = 2,022.56