Finding the Fourth Proportional to 1,273.59, 1,757.43 and 714.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.59 : 1,757.43 = 714.15 : x
2. Step 2: Convert to fraction form
   1,273.59/1,757.43 = 714.15/x
3. Step 3: Cross multiply
   1,273.59x = 1,757.43 × 714.15
4. Step 4: Simplify right side
   1,273.59x = 1,255,068.63
5. Step 5: Solve for x
   x = 1,255,068.63/1,273.59
6. Step 6: Final answer
   x = 985.46