Finding the Fourth Proportional to 1,603.46, 2,212.72 and 904.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.46 : 2,212.72 = 904.84 : x
2. Step 2: Convert to fraction form
   1,603.46/2,212.72 = 904.84/x
3. Step 3: Cross multiply
   1,603.46x = 2,212.72 × 904.84
4. Step 4: Simplify right side
   1,603.46x = 2,002,149.77
5. Step 5: Solve for x
   x = 2,002,149.77/1,603.46
6. Step 6: Final answer
   x = 1,248.64