Finding the Fourth Proportional to 2,712.55, 4,069.34 and 1,231.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,712.55 : 4,069.34 = 1,231.88 : x
2. Step 2: Convert to fraction form
   2,712.55/4,069.34 = 1,231.88/x
3. Step 3: Cross multiply
   2,712.55x = 4,069.34 × 1,231.88
4. Step 4: Simplify right side
   2,712.55x = 5,012,930.39
5. Step 5: Solve for x
   x = 5,012,930.39/2,712.55
6. Step 6: Final answer
   x = 1,848.05