Finding the Fourth Proportional to 1,436.72, 2,164.14 and 1,284.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.72 : 2,164.14 = 1,284.44 : x
2. Step 2: Convert to fraction form
   1,436.72/2,164.14 = 1,284.44/x
3. Step 3: Cross multiply
   1,436.72x = 2,164.14 × 1,284.44
4. Step 4: Simplify right side
   1,436.72x = 2,779,707.98
5. Step 5: Solve for x
   x = 2,779,707.98/1,436.72
6. Step 6: Final answer
   x = 1,934.76