Finding the Fourth Proportional to 2,311.83, 3,191.50 and 1,367.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.83 : 3,191.50 = 1,367.89 : x
2. Step 2: Convert to fraction form
   2,311.83/3,191.50 = 1,367.89/x
3. Step 3: Cross multiply
   2,311.83x = 3,191.50 × 1,367.89
4. Step 4: Simplify right side
   2,311.83x = 4,365,614.67
5. Step 5: Solve for x
   x = 4,365,614.67/2,311.83
6. Step 6: Final answer
   x = 1,888.38