Finding the Fourth Proportional to 2,105.46, 2,905.56 and 1,173.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.46 : 2,905.56 = 1,173.96 : x
2. Step 2: Convert to fraction form
   2,105.46/2,905.56 = 1,173.96/x
3. Step 3: Cross multiply
   2,105.46x = 2,905.56 × 1,173.96
4. Step 4: Simplify right side
   2,105.46x = 3,411,011.22
5. Step 5: Solve for x
   x = 3,411,011.22/2,105.46
6. Step 6: Final answer
   x = 1,620.08