Finding the Fourth Proportional to 1,618.82, 2,234.70 and 1,059.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618.82 : 2,234.70 = 1,059.31 : x
2. Step 2: Convert to fraction form
   1,618.82/2,234.70 = 1,059.31/x
3. Step 3: Cross multiply
   1,618.82x = 2,234.70 × 1,059.31
4. Step 4: Simplify right side
   1,618.82x = 2,367,234.47
5. Step 5: Solve for x
   x = 2,367,234.47/1,618.82
6. Step 6: Final answer
   x = 1,462.33