Finding the Fourth Proportional to 2,830.76, 3,907.50 and 2,430.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.76 : 3,907.50 = 2,430.81 : x
2. Step 2: Convert to fraction form
   2,830.76/3,907.50 = 2,430.81/x
3. Step 3: Cross multiply
   2,830.76x = 3,907.50 × 2,430.81
4. Step 4: Simplify right side
   2,830.76x = 9,498,380.96
5. Step 5: Solve for x
   x = 9,498,380.96/2,830.76
6. Step 6: Final answer
   x = 3,355.42