Finding the Fourth Proportional to 3,917.76, 5,877.41 and 1,726.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,917.76 : 5,877.41 = 1,726.50 : x
2. Step 2: Convert to fraction form
   3,917.76/5,877.41 = 1,726.50/x
3. Step 3: Cross multiply
   3,917.76x = 5,877.41 × 1,726.50
4. Step 4: Simplify right side
   3,917.76x = 10,147,361.77
5. Step 5: Solve for x
   x = 10,147,361.77/3,917.76
6. Step 6: Final answer
   x = 2,590.10