Finding the Fourth Proportional to 2,308.10, 3,185.18 and 1,423.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.10 : 3,185.18 = 1,423.91 : x
2. Step 2: Convert to fraction form
   2,308.10/3,185.18 = 1,423.91/x
3. Step 3: Cross multiply
   2,308.10x = 3,185.18 × 1,423.91
4. Step 4: Simplify right side
   2,308.10x = 4,535,397.29
5. Step 5: Solve for x
   x = 4,535,397.29/2,308.10
6. Step 6: Final answer
   x = 1,964.99