Finding the Fourth Proportional to 2,136.75, 2,948.59 and 1,240.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.75 : 2,948.59 = 1,240.42 : x
2. Step 2: Convert to fraction form
   2,136.75/2,948.59 = 1,240.42/x
3. Step 3: Cross multiply
   2,136.75x = 2,948.59 × 1,240.42
4. Step 4: Simplify right side
   2,136.75x = 3,657,490.01
5. Step 5: Solve for x
   x = 3,657,490.01/2,136.75
6. Step 6: Final answer
   x = 1,711.71