Finding the Fourth Proportional to 1,096.77, 1,521.30 and 1,057.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.77 : 1,521.30 = 1,057.37 : x
2. Step 2: Convert to fraction form
   1,096.77/1,521.30 = 1,057.37/x
3. Step 3: Cross multiply
   1,096.77x = 1,521.30 × 1,057.37
4. Step 4: Simplify right side
   1,096.77x = 1,608,576.98
5. Step 5: Solve for x
   x = 1,608,576.98/1,096.77
6. Step 6: Final answer
   x = 1,466.65