Finding the Fourth Proportional to 2,648.84, 3,973.19 and 1,263.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.84 : 3,973.19 = 1,263.15 : x
2. Step 2: Convert to fraction form
   2,648.84/3,973.19 = 1,263.15/x
3. Step 3: Cross multiply
   2,648.84x = 3,973.19 × 1,263.15
4. Step 4: Simplify right side
   2,648.84x = 5,018,728.63
5. Step 5: Solve for x
   x = 5,018,728.63/2,648.84
6. Step 6: Final answer
   x = 1,894.69