Finding the Fourth Proportional to 2,136.52, 3,206.34 and 1,405.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.52 : 3,206.34 = 1,405.84 : x
2. Step 2: Convert to fraction form
   2,136.52/3,206.34 = 1,405.84/x
3. Step 3: Cross multiply
   2,136.52x = 3,206.34 × 1,405.84
4. Step 4: Simplify right side
   2,136.52x = 4,507,601.03
5. Step 5: Solve for x
   x = 4,507,601.03/2,136.52
6. Step 6: Final answer
   x = 2,109.79