Finding the Fourth Proportional to 1,429.90, 2,138.91 and 1,342.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.90 : 2,138.91 = 1,342.42 : x
2. Step 2: Convert to fraction form
   1,429.90/2,138.91 = 1,342.42/x
3. Step 3: Cross multiply
   1,429.90x = 2,138.91 × 1,342.42
4. Step 4: Simplify right side
   1,429.90x = 2,871,304.87
5. Step 5: Solve for x
   x = 2,871,304.87/1,429.90
6. Step 6: Final answer
   x = 2,008.05