Finding the Fourth Proportional to 1,263.69, 1,743.89 and 711.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,263.69 : 1,743.89 = 711.69 : x
2. Step 2: Convert to fraction form
   1,263.69/1,743.89 = 711.69/x
3. Step 3: Cross multiply
   1,263.69x = 1,743.89 × 711.69
4. Step 4: Simplify right side
   1,263.69x = 1,241,109.07
5. Step 5: Solve for x
   x = 1,241,109.07/1,263.69
6. Step 6: Final answer
   x = 982.13