Finding the Fourth Proportional to 1,445.85, 2,167.56 and 716.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.85 : 2,167.56 = 716.24 : x
2. Step 2: Convert to fraction form
   1,445.85/2,167.56 = 716.24/x
3. Step 3: Cross multiply
   1,445.85x = 2,167.56 × 716.24
4. Step 4: Simplify right side
   1,445.85x = 1,552,498.59
5. Step 5: Solve for x
   x = 1,552,498.59/1,445.85
6. Step 6: Final answer
   x = 1,073.76