Finding the Fourth Proportional to 2,648.16, 3,973.73 and 1,005.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.16 : 3,973.73 = 1,005.89 : x
2. Step 2: Convert to fraction form
   2,648.16/3,973.73 = 1,005.89/x
3. Step 3: Cross multiply
   2,648.16x = 3,973.73 × 1,005.89
4. Step 4: Simplify right side
   2,648.16x = 3,997,110.37
5. Step 5: Solve for x
   x = 3,997,110.37/2,648.16
6. Step 6: Final answer
   x = 1,509.39