Finding the Fourth Proportional to 2,116.14, 2,918.05 and 1,818.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.14 : 2,918.05 = 1,818.46 : x
2. Step 2: Convert to fraction form
   2,116.14/2,918.05 = 1,818.46/x
3. Step 3: Cross multiply
   2,116.14x = 2,918.05 × 1,818.46
4. Step 4: Simplify right side
   2,116.14x = 5,306,357.20
5. Step 5: Solve for x
   x = 5,306,357.20/2,116.14
6. Step 6: Final answer
   x = 2,507.56