Finding the Fourth Proportional to 2,153.16, 3,228.03 and 1,056.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.16 : 3,228.03 = 1,056.81 : x
2. Step 2: Convert to fraction form
   2,153.16/3,228.03 = 1,056.81/x
3. Step 3: Cross multiply
   2,153.16x = 3,228.03 × 1,056.81
4. Step 4: Simplify right side
   2,153.16x = 3,411,414.38
5. Step 5: Solve for x
   x = 3,411,414.38/2,153.16
6. Step 6: Final answer
   x = 1,584.38