Finding the Fourth Proportional to 1,108.50, 1,530.42 and 716.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108.50 : 1,530.42 = 716.26 : x
2. Step 2: Convert to fraction form
   1,108.50/1,530.42 = 716.26/x
3. Step 3: Cross multiply
   1,108.50x = 1,530.42 × 716.26
4. Step 4: Simplify right side
   1,108.50x = 1,096,178.63
5. Step 5: Solve for x
   x = 1,096,178.63/1,108.50
6. Step 6: Final answer
   x = 988.88