Finding the Fourth Proportional to 1,050.35, 1,576.17 and 712.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.35 : 1,576.17 = 712.98 : x
2. Step 2: Convert to fraction form
   1,050.35/1,576.17 = 712.98/x
3. Step 3: Cross multiply
   1,050.35x = 1,576.17 × 712.98
4. Step 4: Simplify right side
   1,050.35x = 1,123,777.69
5. Step 5: Solve for x
   x = 1,123,777.69/1,050.35
6. Step 6: Final answer
   x = 1,069.91