Finding the Fourth Proportional to 1,603.34, 2,212.88 and 974.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.34 : 2,212.88 = 974.29 : x
2. Step 2: Convert to fraction form
   1,603.34/2,212.88 = 974.29/x
3. Step 3: Cross multiply
   1,603.34x = 2,212.88 × 974.29
4. Step 4: Simplify right side
   1,603.34x = 2,155,986.86
5. Step 5: Solve for x
   x = 2,155,986.86/1,603.34
6. Step 6: Final answer
   x = 1,344.68