Finding the Fourth Proportional to 2,648.82, 3,973.19 and 917.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.82 : 3,973.19 = 917.46 : x
2. Step 2: Convert to fraction form
   2,648.82/3,973.19 = 917.46/x
3. Step 3: Cross multiply
   2,648.82x = 3,973.19 × 917.46
4. Step 4: Simplify right side
   2,648.82x = 3,645,242.90
5. Step 5: Solve for x
   x = 3,645,242.90/2,648.82
6. Step 6: Final answer
   x = 1,376.18