Finding the Fourth Proportional to 2,099.60, 3,134.07 and 1,805.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.60 : 3,134.07 = 1,805.30 : x
2. Step 2: Convert to fraction form
   2,099.60/3,134.07 = 1,805.30/x
3. Step 3: Cross multiply
   2,099.60x = 3,134.07 × 1,805.30
4. Step 4: Simplify right side
   2,099.60x = 5,657,936.57
5. Step 5: Solve for x
   x = 5,657,936.57/2,099.60
6. Step 6: Final answer
   x = 2,694.77