Finding the Fourth Proportional to 2,477.78, 3,697.52 and 2,201.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.78 : 3,697.52 = 2,201.67 : x
2. Step 2: Convert to fraction form
   2,477.78/3,697.52 = 2,201.67/x
3. Step 3: Cross multiply
   2,477.78x = 3,697.52 × 2,201.67
4. Step 4: Simplify right side
   2,477.78x = 8,140,728.10
5. Step 5: Solve for x
   x = 8,140,728.10/2,477.78
6. Step 6: Final answer
   x = 3,285.50