Finding the Fourth Proportional to 3,787.72, 5,683.02 and 1,322.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,787.72 : 5,683.02 = 1,322.80 : x
2. Step 2: Convert to fraction form
   3,787.72/5,683.02 = 1,322.80/x
3. Step 3: Cross multiply
   3,787.72x = 5,683.02 × 1,322.80
4. Step 4: Simplify right side
   3,787.72x = 7,517,498.86
5. Step 5: Solve for x
   x = 7,517,498.86/3,787.72
6. Step 6: Final answer
   x = 1,984.70