Finding the Fourth Proportional to 1,050.42, 1,576.52 and 726

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.42 : 1,576.52 = 726 : x
2. Step 2: Convert to fraction form
   1,050.42/1,576.52 = 726/x
3. Step 3: Cross multiply
   1,050.42x = 1,576.52 × 726
4. Step 4: Simplify right side
   1,050.42x = 1,144,553.52
5. Step 5: Solve for x
   x = 1,144,553.52/1,050.42
6. Step 6: Final answer
   x = 1,089.62