Finding the Fourth Proportional to 2,151.23, 3,227.85 and 1,056.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.23 : 3,227.85 = 1,056.38 : x
2. Step 2: Convert to fraction form
   2,151.23/3,227.85 = 1,056.38/x
3. Step 3: Cross multiply
   2,151.23x = 3,227.85 × 1,056.38
4. Step 4: Simplify right side
   2,151.23x = 3,409,820.04
5. Step 5: Solve for x
   x = 3,409,820.04/2,151.23
6. Step 6: Final answer
   x = 1,585.06