Finding the Fourth Proportional to 2,527.42, 3,488.49 and 2,278.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,527.42 : 3,488.49 = 2,278.30 : x
2. Step 2: Convert to fraction form
   2,527.42/3,488.49 = 2,278.30/x
3. Step 3: Cross multiply
   2,527.42x = 3,488.49 × 2,278.30
4. Step 4: Simplify right side
   2,527.42x = 7,947,826.77
5. Step 5: Solve for x
   x = 7,947,826.77/2,527.42
6. Step 6: Final answer
   x = 3,144.64