Finding the Fourth Proportional to 3,787.45, 5,680.71 and 1,322.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,787.45 : 5,680.71 = 1,322.06 : x
2. Step 2: Convert to fraction form
   3,787.45/5,680.71 = 1,322.06/x
3. Step 3: Cross multiply
   3,787.45x = 5,680.71 × 1,322.06
4. Step 4: Simplify right side
   3,787.45x = 7,510,239.46
5. Step 5: Solve for x
   x = 7,510,239.46/3,787.45
6. Step 6: Final answer
   x = 1,982.93