Finding the Fourth Proportional to 3,787.98, 5,684.56 and 1,322.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,787.98 : 5,684.56 = 1,322.79 : x
2. Step 2: Convert to fraction form
   3,787.98/5,684.56 = 1,322.79/x
3. Step 3: Cross multiply
   3,787.98x = 5,684.56 × 1,322.79
4. Step 4: Simplify right side
   3,787.98x = 7,519,494.65
5. Step 5: Solve for x
   x = 7,519,494.65/3,787.98
6. Step 6: Final answer
   x = 1,985.10