Finding the Fourth Proportional to 2,131.13, 3,191.34 and 1,348.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.13 : 3,191.34 = 1,348.77 : x
2. Step 2: Convert to fraction form
   2,131.13/3,191.34 = 1,348.77/x
3. Step 3: Cross multiply
   2,131.13x = 3,191.34 × 1,348.77
4. Step 4: Simplify right side
   2,131.13x = 4,304,383.65
5. Step 5: Solve for x
   x = 4,304,383.65/2,131.13
6. Step 6: Final answer
   x = 2,019.77