Finding the Fourth Proportional to 2,518.57, 3,777.89 and 875.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.57 : 3,777.89 = 875.18 : x
2. Step 2: Convert to fraction form
   2,518.57/3,777.89 = 875.18/x
3. Step 3: Cross multiply
   2,518.57x = 3,777.89 × 875.18
4. Step 4: Simplify right side
   2,518.57x = 3,306,333.14
5. Step 5: Solve for x
   x = 3,306,333.14/2,518.57
6. Step 6: Final answer
   x = 1,312.78