Finding the Fourth Proportional to 2,064.16, 2,846.64 and 1,915.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.16 : 2,846.64 = 1,915.12 : x
2. Step 2: Convert to fraction form
   2,064.16/2,846.64 = 1,915.12/x
3. Step 3: Cross multiply
   2,064.16x = 2,846.64 × 1,915.12
4. Step 4: Simplify right side
   2,064.16x = 5,451,657.20
5. Step 5: Solve for x
   x = 5,451,657.20/2,064.16
6. Step 6: Final answer
   x = 2,641.10