Finding the Fourth Proportional to 1,942.47, 2,683.74 and 1,355.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.47 : 2,683.74 = 1,355.61 : x
2. Step 2: Convert to fraction form
   1,942.47/2,683.74 = 1,355.61/x
3. Step 3: Cross multiply
   1,942.47x = 2,683.74 × 1,355.61
4. Step 4: Simplify right side
   1,942.47x = 3,638,104.78
5. Step 5: Solve for x
   x = 3,638,104.78/1,942.47
6. Step 6: Final answer
   x = 1,872.93