Finding the Fourth Proportional to 748.76, 1,116.17 and 707.72

Step by Step Solution

1. Step 1: Write the proportion equation
   748.76 : 1,116.17 = 707.72 : x
2. Step 2: Convert to fraction form
   748.76/1,116.17 = 707.72/x
3. Step 3: Cross multiply
   748.76x = 1,116.17 × 707.72
4. Step 4: Simplify right side
   748.76x = 789,929.37
5. Step 5: Solve for x
   x = 789,929.37/748.76
6. Step 6: Final answer
   x = 1,054.99