Finding the Fourth Proportional to 2,348.55, 3,239.91 and 1,561.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,348.55 : 3,239.91 = 1,561.23 : x
2. Step 2: Convert to fraction form
   2,348.55/3,239.91 = 1,561.23/x
3. Step 3: Cross multiply
   2,348.55x = 3,239.91 × 1,561.23
4. Step 4: Simplify right side
   2,348.55x = 5,058,244.69
5. Step 5: Solve for x
   x = 5,058,244.69/2,348.55
6. Step 6: Final answer
   x = 2,153.77