Finding the Fourth Proportional to 2,131.25, 3,191.53 and 1,348.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.25 : 3,191.53 = 1,348.90 : x
2. Step 2: Convert to fraction form
   2,131.25/3,191.53 = 1,348.90/x
3. Step 3: Cross multiply
   2,131.25x = 3,191.53 × 1,348.90
4. Step 4: Simplify right side
   2,131.25x = 4,305,054.82
5. Step 5: Solve for x
   x = 4,305,054.82/2,131.25
6. Step 6: Final answer
   x = 2,019.97