Finding the Fourth Proportional to 1,618.52, 2,230.67 and 1,304.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618.52 : 2,230.67 = 1,304.78 : x
2. Step 2: Convert to fraction form
   1,618.52/2,230.67 = 1,304.78/x
3. Step 3: Cross multiply
   1,618.52x = 2,230.67 × 1,304.78
4. Step 4: Simplify right side
   1,618.52x = 2,910,525.71
5. Step 5: Solve for x
   x = 2,910,525.71/1,618.52
6. Step 6: Final answer
   x = 1,798.27