Finding the Fourth Proportional to 2,070.56, 3,106.20 and 1,097.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.56 : 3,106.20 = 1,097.12 : x
2. Step 2: Convert to fraction form
   2,070.56/3,106.20 = 1,097.12/x
3. Step 3: Cross multiply
   2,070.56x = 3,106.20 × 1,097.12
4. Step 4: Simplify right side
   2,070.56x = 3,407,874.14
5. Step 5: Solve for x
   x = 3,407,874.14/2,070.56
6. Step 6: Final answer
   x = 1,645.87