Finding the Fourth Proportional to 1,079.69, 1,618.43 and 463.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.69 : 1,618.43 = 463.55 : x
2. Step 2: Convert to fraction form
   1,079.69/1,618.43 = 463.55/x
3. Step 3: Cross multiply
   1,079.69x = 1,618.43 × 463.55
4. Step 4: Simplify right side
   1,079.69x = 750,212.82
5. Step 5: Solve for x
   x = 750,212.82/1,079.69
6. Step 6: Final answer
   x = 694.84