Finding the Fourth Proportional to 2,136.52, 2,949.78 and 1,309

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.52 : 2,949.78 = 1,309 : x
2. Step 2: Convert to fraction form
   2,136.52/2,949.78 = 1,309/x
3. Step 3: Cross multiply
   2,136.52x = 2,949.78 × 1,309
4. Step 4: Simplify right side
   2,136.52x = 3,861,262.02
5. Step 5: Solve for x
   x = 3,861,262.02/2,136.52
6. Step 6: Final answer
   x = 1,807.27