Finding the Fourth Proportional to 2,136.38, 2,947.83 and 1,205.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.38 : 2,947.83 = 1,205.06 : x
2. Step 2: Convert to fraction form
   2,136.38/2,947.83 = 1,205.06/x
3. Step 3: Cross multiply
   2,136.38x = 2,947.83 × 1,205.06
4. Step 4: Simplify right side
   2,136.38x = 3,552,312.02
5. Step 5: Solve for x
   x = 3,552,312.02/2,136.38
6. Step 6: Final answer
   x = 1,662.77