Finding the Fourth Proportional to 1,273.63, 1,757.61 and 714.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.63 : 1,757.61 = 714.10 : x
2. Step 2: Convert to fraction form
   1,273.63/1,757.61 = 714.10/x
3. Step 3: Cross multiply
   1,273.63x = 1,757.61 × 714.10
4. Step 4: Simplify right side
   1,273.63x = 1,255,109.30
5. Step 5: Solve for x
   x = 1,255,109.30/1,273.63
6. Step 6: Final answer
   x = 985.46