Finding the Fourth Proportional to 1,606.69, 2,217.28 and 898.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.69 : 2,217.28 = 898.52 : x
2. Step 2: Convert to fraction form
   1,606.69/2,217.28 = 898.52/x
3. Step 3: Cross multiply
   1,606.69x = 2,217.28 × 898.52
4. Step 4: Simplify right side
   1,606.69x = 1,992,259.34
5. Step 5: Solve for x
   x = 1,992,259.34/1,606.69
6. Step 6: Final answer
   x = 1,239.98