Finding the Fourth Proportional to 1,868.62, 2,805.36 and 1,436.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.62 : 2,805.36 = 1,436.08 : x
2. Step 2: Convert to fraction form
   1,868.62/2,805.36 = 1,436.08/x
3. Step 3: Cross multiply
   1,868.62x = 2,805.36 × 1,436.08
4. Step 4: Simplify right side
   1,868.62x = 4,028,721.39
5. Step 5: Solve for x
   x = 4,028,721.39/1,868.62
6. Step 6: Final answer
   x = 2,155.99