Finding the Fourth Proportional to 2,072.16, 3,109.14 and 1,099.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.16 : 3,109.14 = 1,099.08 : x
2. Step 2: Convert to fraction form
   2,072.16/3,109.14 = 1,099.08/x
3. Step 3: Cross multiply
   2,072.16x = 3,109.14 × 1,099.08
4. Step 4: Simplify right side
   2,072.16x = 3,417,193.59
5. Step 5: Solve for x
   x = 3,417,193.59/2,072.16
6. Step 6: Final answer
   x = 1,649.10