Finding the Fourth Proportional to 1,636.10, 2,448.15 and 1,204.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636.10 : 2,448.15 = 1,204.10 : x
2. Step 2: Convert to fraction form
   1,636.10/2,448.15 = 1,204.10/x
3. Step 3: Cross multiply
   1,636.10x = 2,448.15 × 1,204.10
4. Step 4: Simplify right side
   1,636.10x = 2,947,817.42
5. Step 5: Solve for x
   x = 2,947,817.42/1,636.10
6. Step 6: Final answer
   x = 1,801.73