Finding the Fourth Proportional to 2,311.43, 3,189.77 and 1,263.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.43 : 3,189.77 = 1,263.50 : x
2. Step 2: Convert to fraction form
   2,311.43/3,189.77 = 1,263.50/x
3. Step 3: Cross multiply
   2,311.43x = 3,189.77 × 1,263.50
4. Step 4: Simplify right side
   2,311.43x = 4,030,261.60
5. Step 5: Solve for x
   x = 4,030,261.60/2,311.43
6. Step 6: Final answer
   x = 1,743.62