Finding the Fourth Proportional to 2,342.90, 3,233.94 and 1,399.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,342.90 : 3,233.94 = 1,399.39 : x
2. Step 2: Convert to fraction form
   2,342.90/3,233.94 = 1,399.39/x
3. Step 3: Cross multiply
   2,342.90x = 3,233.94 × 1,399.39
4. Step 4: Simplify right side
   2,342.90x = 4,525,543.30
5. Step 5: Solve for x
   x = 4,525,543.30/2,342.90
6. Step 6: Final answer
   x = 1,931.60