Finding the Fourth Proportional to 1,294.38, 1,936.71 and 1,002.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,294.38 : 1,936.71 = 1,002.78 : x
2. Step 2: Convert to fraction form
   1,294.38/1,936.71 = 1,002.78/x
3. Step 3: Cross multiply
   1,294.38x = 1,936.71 × 1,002.78
4. Step 4: Simplify right side
   1,294.38x = 1,942,094.05
5. Step 5: Solve for x
   x = 1,942,094.05/1,294.38
6. Step 6: Final answer
   x = 1,500.40