Finding the Fourth Proportional to 3,654.57, 5,478.99 and 1,314.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,654.57 : 5,478.99 = 1,314.18 : x
2. Step 2: Convert to fraction form
   3,654.57/5,478.99 = 1,314.18/x
3. Step 3: Cross multiply
   3,654.57x = 5,478.99 × 1,314.18
4. Step 4: Simplify right side
   3,654.57x = 7,200,379.08
5. Step 5: Solve for x
   x = 7,200,379.08/3,654.57
6. Step 6: Final answer
   x = 1,970.24