Finding the Fourth Proportional to 2,648.32, 3,974.06 and 1,005.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.32 : 3,974.06 = 1,005.08 : x
2. Step 2: Convert to fraction form
   2,648.32/3,974.06 = 1,005.08/x
3. Step 3: Cross multiply
   2,648.32x = 3,974.06 × 1,005.08
4. Step 4: Simplify right side
   2,648.32x = 3,994,248.22
5. Step 5: Solve for x
   x = 3,994,248.22/2,648.32
6. Step 6: Final answer
   x = 1,508.22