Finding the Fourth Proportional to 747.48, 1,112.72 and 712.10

Step by Step Solution

1. Step 1: Write the proportion equation
   747.48 : 1,112.72 = 712.10 : x
2. Step 2: Convert to fraction form
   747.48/1,112.72 = 712.10/x
3. Step 3: Cross multiply
   747.48x = 1,112.72 × 712.10
4. Step 4: Simplify right side
   747.48x = 792,367.91
5. Step 5: Solve for x
   x = 792,367.91/747.48
6. Step 6: Final answer
   x = 1,060.05