Finding the Fourth Proportional to 2,615.98, 3,924.04 and 1,155.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.98 : 3,924.04 = 1,155.15 : x
2. Step 2: Convert to fraction form
   2,615.98/3,924.04 = 1,155.15/x
3. Step 3: Cross multiply
   2,615.98x = 3,924.04 × 1,155.15
4. Step 4: Simplify right side
   2,615.98x = 4,532,832.30
5. Step 5: Solve for x
   x = 4,532,832.30/2,615.98
6. Step 6: Final answer
   x = 1,732.75