Finding the Fourth Proportional to 2,084.40, 3,126.72 and 697.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.40 : 3,126.72 = 697.92 : x
2. Step 2: Convert to fraction form
   2,084.40/3,126.72 = 697.92/x
3. Step 3: Cross multiply
   2,084.40x = 3,126.72 × 697.92
4. Step 4: Simplify right side
   2,084.40x = 2,182,200.42
5. Step 5: Solve for x
   x = 2,182,200.42/2,084.40
6. Step 6: Final answer
   x = 1,046.92