Finding the Fourth Proportional to 3,654.72, 5,482.35 and 1,057.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,654.72 : 5,482.35 = 1,057.50 : x
2. Step 2: Convert to fraction form
   3,654.72/5,482.35 = 1,057.50/x
3. Step 3: Cross multiply
   3,654.72x = 5,482.35 × 1,057.50
4. Step 4: Simplify right side
   3,654.72x = 5,797,585.13
5. Step 5: Solve for x
   x = 5,797,585.13/3,654.72
6. Step 6: Final answer
   x = 1,586.33