Finding the Fourth Proportional to 1,015.34, 1,401.43 and 573.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.34 : 1,401.43 = 573.50 : x
2. Step 2: Convert to fraction form
   1,015.34/1,401.43 = 573.50/x
3. Step 3: Cross multiply
   1,015.34x = 1,401.43 × 573.50
4. Step 4: Simplify right side
   1,015.34x = 803,720.11
5. Step 5: Solve for x
   x = 803,720.11/1,015.34
6. Step 6: Final answer
   x = 791.58