Finding the Fourth Proportional to 2,605.91, 3,908.89 and 1,024.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.91 : 3,908.89 = 1,024.79 : x
2. Step 2: Convert to fraction form
   2,605.91/3,908.89 = 1,024.79/x
3. Step 3: Cross multiply
   2,605.91x = 3,908.89 × 1,024.79
4. Step 4: Simplify right side
   2,605.91x = 4,005,769.28
5. Step 5: Solve for x
   x = 4,005,769.28/2,605.91
6. Step 6: Final answer
   x = 1,537.19