Finding the Fourth Proportional to 1,273.56, 1,759.71 and 981.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.56 : 1,759.71 = 981.34 : x
2. Step 2: Convert to fraction form
   1,273.56/1,759.71 = 981.34/x
3. Step 3: Cross multiply
   1,273.56x = 1,759.71 × 981.34
4. Step 4: Simplify right side
   1,273.56x = 1,726,873.81
5. Step 5: Solve for x
   x = 1,726,873.81/1,273.56
6. Step 6: Final answer
   x = 1,355.94