Finding the Fourth Proportional to 2,280.02, 3,145.64 and 1,396.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.02 : 3,145.64 = 1,396.04 : x
2. Step 2: Convert to fraction form
   2,280.02/3,145.64 = 1,396.04/x
3. Step 3: Cross multiply
   2,280.02x = 3,145.64 × 1,396.04
4. Step 4: Simplify right side
   2,280.02x = 4,391,439.27
5. Step 5: Solve for x
   x = 4,391,439.27/2,280.02
6. Step 6: Final answer
   x = 1,926.05