Finding the Fourth Proportional to 1,214.02, 1,675.32 and 716.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,214.02 : 1,675.32 = 716.55 : x
2. Step 2: Convert to fraction form
   1,214.02/1,675.32 = 716.55/x
3. Step 3: Cross multiply
   1,214.02x = 1,675.32 × 716.55
4. Step 4: Simplify right side
   1,214.02x = 1,200,450.55
5. Step 5: Solve for x
   x = 1,200,450.55/1,214.02
6. Step 6: Final answer
   x = 988.82