Finding the Fourth Proportional to 2,560.61, 3,842.29 and 1,099.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560.61 : 3,842.29 = 1,099.89 : x
2. Step 2: Convert to fraction form
   2,560.61/3,842.29 = 1,099.89/x
3. Step 3: Cross multiply
   2,560.61x = 3,842.29 × 1,099.89
4. Step 4: Simplify right side
   2,560.61x = 4,226,096.35
5. Step 5: Solve for x
   x = 4,226,096.35/2,560.61
6. Step 6: Final answer
   x = 1,650.43