Finding the Fourth Proportional to 4,061.80, 6,087.80 and 1,978.69

Step by Step Solution

1. Step 1: Write the proportion equation
   4,061.80 : 6,087.80 = 1,978.69 : x
2. Step 2: Convert to fraction form
   4,061.80/6,087.80 = 1,978.69/x
3. Step 3: Cross multiply
   4,061.80x = 6,087.80 × 1,978.69
4. Step 4: Simplify right side
   4,061.80x = 12,045,868.98
5. Step 5: Solve for x
   x = 12,045,868.98/4,061.80
6. Step 6: Final answer
   x = 2,965.65