Finding the Fourth Proportional to 1,406.40, 2,108.31 and 884.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.40 : 2,108.31 = 884.82 : x
2. Step 2: Convert to fraction form
   1,406.40/2,108.31 = 884.82/x
3. Step 3: Cross multiply
   1,406.40x = 2,108.31 × 884.82
4. Step 4: Simplify right side
   1,406.40x = 1,865,474.85
5. Step 5: Solve for x
   x = 1,865,474.85/1,406.40
6. Step 6: Final answer
   x = 1,326.42