Finding the Fourth Proportional to 2,389.90, 3,298.17 and 1,342.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.90 : 3,298.17 = 1,342.03 : x
2. Step 2: Convert to fraction form
   2,389.90/3,298.17 = 1,342.03/x
3. Step 3: Cross multiply
   2,389.90x = 3,298.17 × 1,342.03
4. Step 4: Simplify right side
   2,389.90x = 4,426,243.09
5. Step 5: Solve for x
   x = 4,426,243.09/2,389.90
6. Step 6: Final answer
   x = 1,852.06