Finding the Fourth Proportional to 2,131.82, 3,197.89 and 670.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.82 : 3,197.89 = 670.94 : x
2. Step 2: Convert to fraction form
   2,131.82/3,197.89 = 670.94/x
3. Step 3: Cross multiply
   2,131.82x = 3,197.89 × 670.94
4. Step 4: Simplify right side
   2,131.82x = 2,145,592.32
5. Step 5: Solve for x
   x = 2,145,592.32/2,131.82
6. Step 6: Final answer
   x = 1,006.46