Finding the Fourth Proportional to 2,136.32, 2,947.84 and 1,308.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.32 : 2,947.84 = 1,308.16 : x
2. Step 2: Convert to fraction form
   2,136.32/2,947.84 = 1,308.16/x
3. Step 3: Cross multiply
   2,136.32x = 2,947.84 × 1,308.16
4. Step 4: Simplify right side
   2,136.32x = 3,856,246.37
5. Step 5: Solve for x
   x = 3,856,246.37/2,136.32
6. Step 6: Final answer
   x = 1,805.09