Finding the Fourth Proportional to 1,273.89, 1,757.89 and 706.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.89 : 1,757.89 = 706.69 : x
2. Step 2: Convert to fraction form
   1,273.89/1,757.89 = 706.69/x
3. Step 3: Cross multiply
   1,273.89x = 1,757.89 × 706.69
4. Step 4: Simplify right side
   1,273.89x = 1,242,283.28
5. Step 5: Solve for x
   x = 1,242,283.28/1,273.89
6. Step 6: Final answer
   x = 975.19