Finding the Fourth Proportional to 2,136.50, 2,948.42 and 1,205

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.50 : 2,948.42 = 1,205 : x
2. Step 2: Convert to fraction form
   2,136.50/2,948.42 = 1,205/x
3. Step 3: Cross multiply
   2,136.50x = 2,948.42 × 1,205
4. Step 4: Simplify right side
   2,136.50x = 3,552,846.10
5. Step 5: Solve for x
   x = 3,552,846.10/2,136.50
6. Step 6: Final answer
   x = 1,662.93