Finding the Fourth Proportional to 3,870.19, 5,340.98 and 2,276.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.19 : 5,340.98 = 2,276.96 : x
2. Step 2: Convert to fraction form
   3,870.19/5,340.98 = 2,276.96/x
3. Step 3: Cross multiply
   3,870.19x = 5,340.98 × 2,276.96
4. Step 4: Simplify right side
   3,870.19x = 12,161,197.82
5. Step 5: Solve for x
   x = 12,161,197.82/3,870.19
6. Step 6: Final answer
   x = 3,142.27