Finding the Fourth Proportional to 2,612.76, 3,915.78 and 1,516.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.76 : 3,915.78 = 1,516.56 : x
2. Step 2: Convert to fraction form
   2,612.76/3,915.78 = 1,516.56/x
3. Step 3: Cross multiply
   2,612.76x = 3,915.78 × 1,516.56
4. Step 4: Simplify right side
   2,612.76x = 5,938,515.32
5. Step 5: Solve for x
   x = 5,938,515.32/2,612.76
6. Step 6: Final answer
   x = 2,272.89