Finding the Fourth Proportional to 2,349.48, 3,242.71 and 1,405.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,349.48 : 3,242.71 = 1,405.38 : x
2. Step 2: Convert to fraction form
   2,349.48/3,242.71 = 1,405.38/x
3. Step 3: Cross multiply
   2,349.48x = 3,242.71 × 1,405.38
4. Step 4: Simplify right side
   2,349.48x = 4,557,227.55
5. Step 5: Solve for x
   x = 4,557,227.55/2,349.48
6. Step 6: Final answer
   x = 1,939.67