Finding the Fourth Proportional to 2,510.51, 3,464.78 and 1,515.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.51 : 3,464.78 = 1,515.78 : x
2. Step 2: Convert to fraction form
   2,510.51/3,464.78 = 1,515.78/x
3. Step 3: Cross multiply
   2,510.51x = 3,464.78 × 1,515.78
4. Step 4: Simplify right side
   2,510.51x = 5,251,859.18
5. Step 5: Solve for x
   x = 5,251,859.18/2,510.51
6. Step 6: Final answer
   x = 2,091.95