Finding the Fourth Proportional to 1,162.05, 1,603.50 and 1,037.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.05 : 1,603.50 = 1,037.21 : x
2. Step 2: Convert to fraction form
   1,162.05/1,603.50 = 1,037.21/x
3. Step 3: Cross multiply
   1,162.05x = 1,603.50 × 1,037.21
4. Step 4: Simplify right side
   1,162.05x = 1,663,154.33
5. Step 5: Solve for x
   x = 1,663,154.33/1,162.05
6. Step 6: Final answer
   x = 1,431.23