Finding the Fourth Proportional to 2,385.03, 3,289.57 and 2,280.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.03 : 3,289.57 = 2,280.34 : x
2. Step 2: Convert to fraction form
   2,385.03/3,289.57 = 2,280.34/x
3. Step 3: Cross multiply
   2,385.03x = 3,289.57 × 2,280.34
4. Step 4: Simplify right side
   2,385.03x = 7,501,338.05
5. Step 5: Solve for x
   x = 7,501,338.05/2,385.03
6. Step 6: Final answer
   x = 3,145.18