Finding the Fourth Proportional to 3,873.72, 5,345.76 and 2,280.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,873.72 : 5,345.76 = 2,280.43 : x
2. Step 2: Convert to fraction form
   3,873.72/5,345.76 = 2,280.43/x
3. Step 3: Cross multiply
   3,873.72x = 5,345.76 × 2,280.43
4. Step 4: Simplify right side
   3,873.72x = 12,190,631.48
5. Step 5: Solve for x
   x = 12,190,631.48/3,873.72
6. Step 6: Final answer
   x = 3,147.01