Finding the Fourth Proportional to 2,045.76, 3,068.91 and 1,005.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.76 : 3,068.91 = 1,005.80 : x
2. Step 2: Convert to fraction form
   2,045.76/3,068.91 = 1,005.80/x
3. Step 3: Cross multiply
   2,045.76x = 3,068.91 × 1,005.80
4. Step 4: Simplify right side
   2,045.76x = 3,086,694.33
5. Step 5: Solve for x
   x = 3,086,694.33/2,045.76
6. Step 6: Final answer
   x = 1,508.83