Finding the Fourth Proportional to 2,154.56, 3,227.24 and 1,042.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.56 : 3,227.24 = 1,042.29 : x
2. Step 2: Convert to fraction form
   2,154.56/3,227.24 = 1,042.29/x
3. Step 3: Cross multiply
   2,154.56x = 3,227.24 × 1,042.29
4. Step 4: Simplify right side
   2,154.56x = 3,363,714.77
5. Step 5: Solve for x
   x = 3,363,714.77/2,154.56
6. Step 6: Final answer
   x = 1,561.21