Finding the Fourth Proportional to 2,345.55, 3,235.77 and 1,558.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.55 : 3,235.77 = 1,558.23 : x
2. Step 2: Convert to fraction form
   2,345.55/3,235.77 = 1,558.23/x
3. Step 3: Cross multiply
   2,345.55x = 3,235.77 × 1,558.23
4. Step 4: Simplify right side
   2,345.55x = 5,042,073.89
5. Step 5: Solve for x
   x = 5,042,073.89/2,345.55
6. Step 6: Final answer
   x = 2,149.63