Finding the Fourth Proportional to 3,401.31, 5,099.76 and 1,427.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.31 : 5,099.76 = 1,427.88 : x
2. Step 2: Convert to fraction form
   3,401.31/5,099.76 = 1,427.88/x
3. Step 3: Cross multiply
   3,401.31x = 5,099.76 × 1,427.88
4. Step 4: Simplify right side
   3,401.31x = 7,281,845.31
5. Step 5: Solve for x
   x = 7,281,845.31/3,401.31
6. Step 6: Final answer
   x = 2,140.89