Finding the Fourth Proportional to 2,157.89, 2,974.87 and 1,824.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157.89 : 2,974.87 = 1,824.98 : x
2. Step 2: Convert to fraction form
   2,157.89/2,974.87 = 1,824.98/x
3. Step 3: Cross multiply
   2,157.89x = 2,974.87 × 1,824.98
4. Step 4: Simplify right side
   2,157.89x = 5,429,078.25
5. Step 5: Solve for x
   x = 5,429,078.25/2,157.89
6. Step 6: Final answer
   x = 2,515.92