Finding the Fourth Proportional to 2,885.76, 4,327.56 and 1,242.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,885.76 : 4,327.56 = 1,242.18 : x
2. Step 2: Convert to fraction form
   2,885.76/4,327.56 = 1,242.18/x
3. Step 3: Cross multiply
   2,885.76x = 4,327.56 × 1,242.18
4. Step 4: Simplify right side
   2,885.76x = 5,375,608.48
5. Step 5: Solve for x
   x = 5,375,608.48/2,885.76
6. Step 6: Final answer
   x = 1,862.81