Finding the Fourth Proportional to 1,911.42, 2,631.89 and 1,674.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,911.42 : 2,631.89 = 1,674.05 : x
2. Step 2: Convert to fraction form
   1,911.42/2,631.89 = 1,674.05/x
3. Step 3: Cross multiply
   1,911.42x = 2,631.89 × 1,674.05
4. Step 4: Simplify right side
   1,911.42x = 4,405,893.92
5. Step 5: Solve for x
   x = 4,405,893.92/1,911.42
6. Step 6: Final answer
   x = 2,305.04