Finding the Fourth Proportional to 1,885.20, 2,600.69 and 1,099.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.20 : 2,600.69 = 1,099.10 : x
2. Step 2: Convert to fraction form
   1,885.20/2,600.69 = 1,099.10/x
3. Step 3: Cross multiply
   1,885.20x = 2,600.69 × 1,099.10
4. Step 4: Simplify right side
   1,885.20x = 2,858,399.88
5. Step 5: Solve for x
   x = 2,858,399.88/1,885.20
6. Step 6: Final answer
   x = 1,516.23