Finding the Fourth Proportional to 1,609.71, 2,407.89 and 1,511.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.71 : 2,407.89 = 1,511.30 : x
2. Step 2: Convert to fraction form
   1,609.71/2,407.89 = 1,511.30/x
3. Step 3: Cross multiply
   1,609.71x = 2,407.89 × 1,511.30
4. Step 4: Simplify right side
   1,609.71x = 3,639,032.12
5. Step 5: Solve for x
   x = 3,639,032.12/1,609.71
6. Step 6: Final answer
   x = 2,260.68