Finding the Fourth Proportional to 2,615.96, 3,924.72 and 1,055.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.96 : 3,924.72 = 1,055.16 : x
2. Step 2: Convert to fraction form
   2,615.96/3,924.72 = 1,055.16/x
3. Step 3: Cross multiply
   2,615.96x = 3,924.72 × 1,055.16
4. Step 4: Simplify right side
   2,615.96x = 4,141,207.56
5. Step 5: Solve for x
   x = 4,141,207.56/2,615.96
6. Step 6: Final answer
   x = 1,583.05