Finding the Fourth Proportional to 2,330.59, 3,209.28 and 2,278.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,330.59 : 3,209.28 = 2,278.86 : x
2. Step 2: Convert to fraction form
   2,330.59/3,209.28 = 2,278.86/x
3. Step 3: Cross multiply
   2,330.59x = 3,209.28 × 2,278.86
4. Step 4: Simplify right side
   2,330.59x = 7,313,499.82
5. Step 5: Solve for x
   x = 7,313,499.82/2,330.59
6. Step 6: Final answer
   x = 3,138.05