Finding the Fourth Proportional to 1,805.86, 2,494.14 and 1,215.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.86 : 2,494.14 = 1,215.37 : x
2. Step 2: Convert to fraction form
   1,805.86/2,494.14 = 1,215.37/x
3. Step 3: Cross multiply
   1,805.86x = 2,494.14 × 1,215.37
4. Step 4: Simplify right side
   1,805.86x = 3,031,296.70
5. Step 5: Solve for x
   x = 3,031,296.70/1,805.86
6. Step 6: Final answer
   x = 1,678.59