Finding the Fourth Proportional to 1,371.54, 1,892.88 and 951.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.54 : 1,892.88 = 951.78 : x
2. Step 2: Convert to fraction form
   1,371.54/1,892.88 = 951.78/x
3. Step 3: Cross multiply
   1,371.54x = 1,892.88 × 951.78
4. Step 4: Simplify right side
   1,371.54x = 1,801,605.33
5. Step 5: Solve for x
   x = 1,801,605.33/1,371.54
6. Step 6: Final answer
   x = 1,313.56