Finding the Fourth Proportional to 2,061.42, 3,091.62 and 674.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.42 : 3,091.62 = 674.40 : x
2. Step 2: Convert to fraction form
   2,061.42/3,091.62 = 674.40/x
3. Step 3: Cross multiply
   2,061.42x = 3,091.62 × 674.40
4. Step 4: Simplify right side
   2,061.42x = 2,084,988.53
5. Step 5: Solve for x
   x = 2,084,988.53/2,061.42
6. Step 6: Final answer
   x = 1,011.43