Finding the Fourth Proportional to 3,061.65, 4,225.48 and 2,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.65 : 4,225.48 = 2,978.25 : x
2. Step 2: Convert to fraction form
   3,061.65/4,225.48 = 2,978.25/x
3. Step 3: Cross multiply
   3,061.65x = 4,225.48 × 2,978.25
4. Step 4: Simplify right side
   3,061.65x = 12,584,520.92
5. Step 5: Solve for x
   x = 12,584,520.92/3,061.65
6. Step 6: Final answer
   x = 4,110.38