Finding the Fourth Proportional to 2,131.76, 3,194.16 and 1,512.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.76 : 3,194.16 = 1,512.45 : x
2. Step 2: Convert to fraction form
   2,131.76/3,194.16 = 1,512.45/x
3. Step 3: Cross multiply
   2,131.76x = 3,194.16 × 1,512.45
4. Step 4: Simplify right side
   2,131.76x = 4,830,996.89
5. Step 5: Solve for x
   x = 4,830,996.89/2,131.76
6. Step 6: Final answer
   x = 2,266.21