Finding the Fourth Proportional to 1,636.07, 2,448.42 and 1,340.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636.07 : 2,448.42 = 1,340.15 : x
2. Step 2: Convert to fraction form
   1,636.07/2,448.42 = 1,340.15/x
3. Step 3: Cross multiply
   1,636.07x = 2,448.42 × 1,340.15
4. Step 4: Simplify right side
   1,636.07x = 3,281,250.06
5. Step 5: Solve for x
   x = 3,281,250.06/1,636.07
6. Step 6: Final answer
   x = 2,005.57