Finding the Fourth Proportional to 2,012.61, 2,778.98 and 1,304.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.61 : 2,778.98 = 1,304.79 : x
2. Step 2: Convert to fraction form
   2,012.61/2,778.98 = 1,304.79/x
3. Step 3: Cross multiply
   2,012.61x = 2,778.98 × 1,304.79
4. Step 4: Simplify right side
   2,012.61x = 3,625,978.79
5. Step 5: Solve for x
   x = 3,625,978.79/2,012.61
6. Step 6: Final answer
   x = 1,801.63