Finding the Fourth Proportional to 2,477.51, 3,716.37 and 917.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.51 : 3,716.37 = 917.22 : x
2. Step 2: Convert to fraction form
   2,477.51/3,716.37 = 917.22/x
3. Step 3: Cross multiply
   2,477.51x = 3,716.37 × 917.22
4. Step 4: Simplify right side
   2,477.51x = 3,408,728.89
5. Step 5: Solve for x
   x = 3,408,728.89/2,477.51
6. Step 6: Final answer
   x = 1,375.87