Finding the Fourth Proportional to 1,609.88, 2,226.30 and 1,580.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.88 : 2,226.30 = 1,580.72 : x
2. Step 2: Convert to fraction form
   1,609.88/2,226.30 = 1,580.72/x
3. Step 3: Cross multiply
   1,609.88x = 2,226.30 × 1,580.72
4. Step 4: Simplify right side
   1,609.88x = 3,519,156.94
5. Step 5: Solve for x
   x = 3,519,156.94/1,609.88
6. Step 6: Final answer
   x = 2,185.97