Finding the Fourth Proportional to 1,273.60, 1,914.72 and 1,016.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.60 : 1,914.72 = 1,016.88 : x
2. Step 2: Convert to fraction form
   1,273.60/1,914.72 = 1,016.88/x
3. Step 3: Cross multiply
   1,273.60x = 1,914.72 × 1,016.88
4. Step 4: Simplify right side
   1,273.60x = 1,947,040.47
5. Step 5: Solve for x
   x = 1,947,040.47/1,273.60
6. Step 6: Final answer
   x = 1,528.77