Finding the Fourth Proportional to 1,641.27, 2,461.35 and 716.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.27 : 2,461.35 = 716.55 : x
2. Step 2: Convert to fraction form
   1,641.27/2,461.35 = 716.55/x
3. Step 3: Cross multiply
   1,641.27x = 2,461.35 × 716.55
4. Step 4: Simplify right side
   1,641.27x = 1,763,680.34
5. Step 5: Solve for x
   x = 1,763,680.34/1,641.27
6. Step 6: Final answer
   x = 1,074.58