Finding the Fourth Proportional to 1,942.38, 2,681.96 and 1,280.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.38 : 2,681.96 = 1,280.15 : x
2. Step 2: Convert to fraction form
   1,942.38/2,681.96 = 1,280.15/x
3. Step 3: Cross multiply
   1,942.38x = 2,681.96 × 1,280.15
4. Step 4: Simplify right side
   1,942.38x = 3,433,323.63
5. Step 5: Solve for x
   x = 3,433,323.63/1,942.38
6. Step 6: Final answer
   x = 1,767.59