Finding the Fourth Proportional to 3,427.30, 5,141.31 and 1,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,427.30 : 5,141.31 = 1,118.50 : x
2. Step 2: Convert to fraction form
   3,427.30/5,141.31 = 1,118.50/x
3. Step 3: Cross multiply
   3,427.30x = 5,141.31 × 1,118.50
4. Step 4: Simplify right side
   3,427.30x = 5,750,555.24
5. Step 5: Solve for x
   x = 5,750,555.24/3,427.30
6. Step 6: Final answer
   x = 1,677.87