Finding the Fourth Proportional to 2,648.56, 3,969.82 and 1,259.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.56 : 3,969.82 = 1,259.93 : x
2. Step 2: Convert to fraction form
   2,648.56/3,969.82 = 1,259.93/x
3. Step 3: Cross multiply
   2,648.56x = 3,969.82 × 1,259.93
4. Step 4: Simplify right side
   2,648.56x = 5,001,695.31
5. Step 5: Solve for x
   x = 5,001,695.31/2,648.56
6. Step 6: Final answer
   x = 1,888.46