Finding the Fourth Proportional to 2,722.89, 4,085.01 and 874.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.89 : 4,085.01 = 874.19 : x
2. Step 2: Convert to fraction form
   2,722.89/4,085.01 = 874.19/x
3. Step 3: Cross multiply
   2,722.89x = 4,085.01 × 874.19
4. Step 4: Simplify right side
   2,722.89x = 3,571,054.47
5. Step 5: Solve for x
   x = 3,571,054.47/2,722.89
6. Step 6: Final answer
   x = 1,311.50