Finding the Fourth Proportional to 2,355.61, 3,248.47 and 1,558.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.61 : 3,248.47 = 1,558.57 : x
2. Step 2: Convert to fraction form
   2,355.61/3,248.47 = 1,558.57/x
3. Step 3: Cross multiply
   2,355.61x = 3,248.47 × 1,558.57
4. Step 4: Simplify right side
   2,355.61x = 5,062,967.89
5. Step 5: Solve for x
   x = 5,062,967.89/2,355.61
6. Step 6: Final answer
   x = 2,149.32