Finding the Fourth Proportional to 2,724.37, 4,085.65 and 875.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,724.37 : 4,085.65 = 875.05 : x
2. Step 2: Convert to fraction form
   2,724.37/4,085.65 = 875.05/x
3. Step 3: Cross multiply
   2,724.37x = 4,085.65 × 875.05
4. Step 4: Simplify right side
   2,724.37x = 3,575,131.73
5. Step 5: Solve for x
   x = 3,575,131.73/2,724.37
6. Step 6: Final answer
   x = 1,312.28