Finding the Fourth Proportional to 2,080.76, 3,117.90 and 1,105.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.76 : 3,117.90 = 1,105.52 : x
2. Step 2: Convert to fraction form
   2,080.76/3,117.90 = 1,105.52/x
3. Step 3: Cross multiply
   2,080.76x = 3,117.90 × 1,105.52
4. Step 4: Simplify right side
   2,080.76x = 3,446,900.81
5. Step 5: Solve for x
   x = 3,446,900.81/2,080.76
6. Step 6: Final answer
   x = 1,656.56