Finding the Fourth Proportional to 3,654.76, 5,482.68 and 1,057.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,654.76 : 5,482.68 = 1,057.72 : x
2. Step 2: Convert to fraction form
   3,654.76/5,482.68 = 1,057.72/x
3. Step 3: Cross multiply
   3,654.76x = 5,482.68 × 1,057.72
4. Step 4: Simplify right side
   3,654.76x = 5,799,140.29
5. Step 5: Solve for x
   x = 5,799,140.29/3,654.76
6. Step 6: Final answer
   x = 1,586.74