Finding the Fourth Proportional to 2,518.81, 3,777.71 and 875.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.81 : 3,777.71 = 875.43 : x
2. Step 2: Convert to fraction form
   2,518.81/3,777.71 = 875.43/x
3. Step 3: Cross multiply
   2,518.81x = 3,777.71 × 875.43
4. Step 4: Simplify right side
   2,518.81x = 3,307,120.67
5. Step 5: Solve for x
   x = 3,307,120.67/2,518.81
6. Step 6: Final answer
   x = 1,312.97