Finding the Fourth Proportional to 2,760.40, 3,812.52 and 2,390.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.40 : 3,812.52 = 2,390.80 : x
2. Step 2: Convert to fraction form
   2,760.40/3,812.52 = 2,390.80/x
3. Step 3: Cross multiply
   2,760.40x = 3,812.52 × 2,390.80
4. Step 4: Simplify right side
   2,760.40x = 9,114,972.82
5. Step 5: Solve for x
   x = 9,114,972.82/2,760.40
6. Step 6: Final answer
   x = 3,302.05