Finding the Fourth Proportional to 2,541.78, 3,811.72 and 875.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,541.78 : 3,811.72 = 875.44 : x
2. Step 2: Convert to fraction form
   2,541.78/3,811.72 = 875.44/x
3. Step 3: Cross multiply
   2,541.78x = 3,811.72 × 875.44
4. Step 4: Simplify right side
   2,541.78x = 3,336,913.10
5. Step 5: Solve for x
   x = 3,336,913.10/2,541.78
6. Step 6: Final answer
   x = 1,312.83