Finding the Fourth Proportional to 2,618.52, 3,927.72 and 670.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.52 : 3,927.72 = 670.71 : x
2. Step 2: Convert to fraction form
   2,618.52/3,927.72 = 670.71/x
3. Step 3: Cross multiply
   2,618.52x = 3,927.72 × 670.71
4. Step 4: Simplify right side
   2,618.52x = 2,634,361.08
5. Step 5: Solve for x
   x = 2,634,361.08/2,618.52
6. Step 6: Final answer
   x = 1,006.05