Finding the Fourth Proportional to 2,518.47, 3,778.04 and 875.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.47 : 3,778.04 = 875.15 : x
2. Step 2: Convert to fraction form
   2,518.47/3,778.04 = 875.15/x
3. Step 3: Cross multiply
   2,518.47x = 3,778.04 × 875.15
4. Step 4: Simplify right side
   2,518.47x = 3,306,351.71
5. Step 5: Solve for x
   x = 3,306,351.71/2,518.47
6. Step 6: Final answer
   x = 1,312.84