Finding the Fourth Proportional to 1,273.60, 1,757.50 and 714.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.60 : 1,757.50 = 714.07 : x
2. Step 2: Convert to fraction form
   1,273.60/1,757.50 = 714.07/x
3. Step 3: Cross multiply
   1,273.60x = 1,757.50 × 714.07
4. Step 4: Simplify right side
   1,273.60x = 1,254,978.03
5. Step 5: Solve for x
   x = 1,254,978.03/1,273.60
6. Step 6: Final answer
   x = 985.38