Finding the Fourth Proportional to 1,283.72, 1,771.57 and 752.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,283.72 : 1,771.57 = 752.98 : x
2. Step 2: Convert to fraction form
   1,283.72/1,771.57 = 752.98/x
3. Step 3: Cross multiply
   1,283.72x = 1,771.57 × 752.98
4. Step 4: Simplify right side
   1,283.72x = 1,333,956.78
5. Step 5: Solve for x
   x = 1,333,956.78/1,283.72
6. Step 6: Final answer
   x = 1,039.13