Finding the Fourth Proportional to 1,951.18, 2,692.73 and 1,287.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,951.18 : 2,692.73 = 1,287.56 : x
2. Step 2: Convert to fraction form
   1,951.18/2,692.73 = 1,287.56/x
3. Step 3: Cross multiply
   1,951.18x = 2,692.73 × 1,287.56
4. Step 4: Simplify right side
   1,951.18x = 3,467,061.39
5. Step 5: Solve for x
   x = 3,467,061.39/1,951.18
6. Step 6: Final answer
   x = 1,776.91