Finding the Fourth Proportional to 2,618.72, 3,927.66 and 670.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.72 : 3,927.66 = 670.82 : x
2. Step 2: Convert to fraction form
   2,618.72/3,927.66 = 670.82/x
3. Step 3: Cross multiply
   2,618.72x = 3,927.66 × 670.82
4. Step 4: Simplify right side
   2,618.72x = 2,634,752.88
5. Step 5: Solve for x
   x = 2,634,752.88/2,618.72
6. Step 6: Final answer
   x = 1,006.12