Finding the Fourth Proportional to 1,436.36, 1,983.31 and 1,155.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.36 : 1,983.31 = 1,155.69 : x
2. Step 2: Convert to fraction form
   1,436.36/1,983.31 = 1,155.69/x
3. Step 3: Cross multiply
   1,436.36x = 1,983.31 × 1,155.69
4. Step 4: Simplify right side
   1,436.36x = 2,292,088.64
5. Step 5: Solve for x
   x = 2,292,088.64/1,436.36
6. Step 6: Final answer
   x = 1,595.77