Finding the Fourth Proportional to 3,972.09, 5,957.82 and 1,780.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,972.09 : 5,957.82 = 1,780.83 : x
2. Step 2: Convert to fraction form
   3,972.09/5,957.82 = 1,780.83/x
3. Step 3: Cross multiply
   3,972.09x = 5,957.82 × 1,780.83
4. Step 4: Simplify right side
   3,972.09x = 10,609,864.59
5. Step 5: Solve for x
   x = 10,609,864.59/3,972.09
6. Step 6: Final answer
   x = 2,671.10