Finding the Fourth Proportional to 1,423.83, 2,139.59 and 1,343.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.83 : 2,139.59 = 1,343.64 : x
2. Step 2: Convert to fraction form
   1,423.83/2,139.59 = 1,343.64/x
3. Step 3: Cross multiply
   1,423.83x = 2,139.59 × 1,343.64
4. Step 4: Simplify right side
   1,423.83x = 2,874,842.07
5. Step 5: Solve for x
   x = 2,874,842.07/1,423.83
6. Step 6: Final answer
   x = 2,019.09