Finding the Fourth Proportional to 2,650.73, 3,973.05 and 1,315.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.73 : 3,973.05 = 1,315.85 : x
2. Step 2: Convert to fraction form
   2,650.73/3,973.05 = 1,315.85/x
3. Step 3: Cross multiply
   2,650.73x = 3,973.05 × 1,315.85
4. Step 4: Simplify right side
   2,650.73x = 5,227,917.98
5. Step 5: Solve for x
   x = 5,227,917.98/2,650.73
6. Step 6: Final answer
   x = 1,972.26