Finding the Fourth Proportional to 2,356.89, 3,557.48 and 2,356.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,356.89 : 3,557.48 = 2,356.89 : x
2. Step 2: Convert to fraction form
   2,356.89/3,557.48 = 2,356.89/x
3. Step 3: Cross multiply
   2,356.89x = 3,557.48 × 2,356.89
4. Step 4: Simplify right side
   2,356.89x = 8,384,589.04
5. Step 5: Solve for x
   x = 8,384,589.04/2,356.89
6. Step 6: Final answer
   x = 3,557.48