Finding the Fourth Proportional to 2,218.47, 3,320.55 and 1,606.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.47 : 3,320.55 = 1,606.38 : x
2. Step 2: Convert to fraction form
   2,218.47/3,320.55 = 1,606.38/x
3. Step 3: Cross multiply
   2,218.47x = 3,320.55 × 1,606.38
4. Step 4: Simplify right side
   2,218.47x = 5,334,065.11
5. Step 5: Solve for x
   x = 5,334,065.11/2,218.47
6. Step 6: Final answer
   x = 2,404.39