Finding the Fourth Proportional to 1,053.89, 1,580.69 and 273.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.89 : 1,580.69 = 273.94 : x
2. Step 2: Convert to fraction form
   1,053.89/1,580.69 = 273.94/x
3. Step 3: Cross multiply
   1,053.89x = 1,580.69 × 273.94
4. Step 4: Simplify right side
   1,053.89x = 433,016.29
5. Step 5: Solve for x
   x = 433,016.29/1,053.89
6. Step 6: Final answer
   x = 410.88