Finding the Fourth Proportional to 1,433.77, 2,136.24 and 1,339.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.77 : 2,136.24 = 1,339.47 : x
2. Step 2: Convert to fraction form
   1,433.77/2,136.24 = 1,339.47/x
3. Step 3: Cross multiply
   1,433.77x = 2,136.24 × 1,339.47
4. Step 4: Simplify right side
   1,433.77x = 2,861,429.39
5. Step 5: Solve for x
   x = 2,861,429.39/1,433.77
6. Step 6: Final answer
   x = 1,995.74