Finding the Fourth Proportional to 1,603.46, 2,212.92 and 904.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.46 : 2,212.92 = 904.82 : x
2. Step 2: Convert to fraction form
   1,603.46/2,212.92 = 904.82/x
3. Step 3: Cross multiply
   1,603.46x = 2,212.92 × 904.82
4. Step 4: Simplify right side
   1,603.46x = 2,002,294.27
5. Step 5: Solve for x
   x = 2,002,294.27/1,603.46
6. Step 6: Final answer
   x = 1,248.73