Finding the Fourth Proportional to 3,101.76, 4,280.61 and 1,775.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,101.76 : 4,280.61 = 1,775.89 : x
2. Step 2: Convert to fraction form
   3,101.76/4,280.61 = 1,775.89/x
3. Step 3: Cross multiply
   3,101.76x = 4,280.61 × 1,775.89
4. Step 4: Simplify right side
   3,101.76x = 7,601,904.50
5. Step 5: Solve for x
   x = 7,601,904.50/3,101.76
6. Step 6: Final answer
   x = 2,450.84