Finding the Fourth Proportional to 1,037.48, 1,431.72 and 571.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,037.48 : 1,431.72 = 571.73 : x
2. Step 2: Convert to fraction form
   1,037.48/1,431.72 = 571.73/x
3. Step 3: Cross multiply
   1,037.48x = 1,431.72 × 571.73
4. Step 4: Simplify right side
   1,037.48x = 818,557.28
5. Step 5: Solve for x
   x = 818,557.28/1,037.48
6. Step 6: Final answer
   x = 788.99