Finding the Fourth Proportional to 1,619.40, 2,233.31 and 1,059.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619.40 : 2,233.31 = 1,059.69 : x
2. Step 2: Convert to fraction form
   1,619.40/2,233.31 = 1,059.69/x
3. Step 3: Cross multiply
   1,619.40x = 2,233.31 × 1,059.69
4. Step 4: Simplify right side
   1,619.40x = 2,366,610.98
5. Step 5: Solve for x
   x = 2,366,610.98/1,619.40
6. Step 6: Final answer
   x = 1,461.41