Finding the Fourth Proportional to 2,042.16, 2,816.58 and 1,806.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.16 : 2,816.58 = 1,806.36 : x
2. Step 2: Convert to fraction form
   2,042.16/2,816.58 = 1,806.36/x
3. Step 3: Cross multiply
   2,042.16x = 2,816.58 × 1,806.36
4. Step 4: Simplify right side
   2,042.16x = 5,087,757.45
5. Step 5: Solve for x
   x = 5,087,757.45/2,042.16
6. Step 6: Final answer
   x = 2,491.36