Finding the Fourth Proportional to 3,456.18, 5,184.99 and 1,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,456.18 : 5,184.99 = 1,147.50 : x
2. Step 2: Convert to fraction form
   3,456.18/5,184.99 = 1,147.50/x
3. Step 3: Cross multiply
   3,456.18x = 5,184.99 × 1,147.50
4. Step 4: Simplify right side
   3,456.18x = 5,949,776.03
5. Step 5: Solve for x
   x = 5,949,776.03/3,456.18
6. Step 6: Final answer
   x = 1,721.49