Finding the Fourth Proportional to 2,685.83, 4,031.47 and 1,805.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,685.83 : 4,031.47 = 1,805.56 : x
2. Step 2: Convert to fraction form
   2,685.83/4,031.47 = 1,805.56/x
3. Step 3: Cross multiply
   2,685.83x = 4,031.47 × 1,805.56
4. Step 4: Simplify right side
   2,685.83x = 7,279,040.82
5. Step 5: Solve for x
   x = 7,279,040.82/2,685.83
6. Step 6: Final answer
   x = 2,710.17