Finding the Fourth Proportional to 1,109.46, 1,530.45 and 716.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.46 : 1,530.45 = 716.34 : x
2. Step 2: Convert to fraction form
   1,109.46/1,530.45 = 716.34/x
3. Step 3: Cross multiply
   1,109.46x = 1,530.45 × 716.34
4. Step 4: Simplify right side
   1,109.46x = 1,096,322.55
5. Step 5: Solve for x
   x = 1,096,322.55/1,109.46
6. Step 6: Final answer
   x = 988.16