Finding the Fourth Proportional to 2,288.42, 3,158.90 and 1,405.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.42 : 3,158.90 = 1,405.41 : x
2. Step 2: Convert to fraction form
   2,288.42/3,158.90 = 1,405.41/x
3. Step 3: Cross multiply
   2,288.42x = 3,158.90 × 1,405.41
4. Step 4: Simplify right side
   2,288.42x = 4,439,549.65
5. Step 5: Solve for x
   x = 4,439,549.65/2,288.42
6. Step 6: Final answer
   x = 1,940.01