Finding the Fourth Proportional to 1,299.72, 1,944.72 and 752.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,299.72 : 1,944.72 = 752.16 : x
2. Step 2: Convert to fraction form
   1,299.72/1,944.72 = 752.16/x
3. Step 3: Cross multiply
   1,299.72x = 1,944.72 × 752.16
4. Step 4: Simplify right side
   1,299.72x = 1,462,740.60
5. Step 5: Solve for x
   x = 1,462,740.60/1,299.72
6. Step 6: Final answer
   x = 1,125.43