Finding the Fourth Proportional to 2,548.12, 3,821.62 and 904.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.12 : 3,821.62 = 904.72 : x
2. Step 2: Convert to fraction form
   2,548.12/3,821.62 = 904.72/x
3. Step 3: Cross multiply
   2,548.12x = 3,821.62 × 904.72
4. Step 4: Simplify right side
   2,548.12x = 3,457,496.05
5. Step 5: Solve for x
   x = 3,457,496.05/2,548.12
6. Step 6: Final answer
   x = 1,356.88