Finding the Fourth Proportional to 2,548.72, 3,821.72 and 904.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.72 : 3,821.72 = 904.08 : x
2. Step 2: Convert to fraction form
   2,548.72/3,821.72 = 904.08/x
3. Step 3: Cross multiply
   2,548.72x = 3,821.72 × 904.08
4. Step 4: Simplify right side
   2,548.72x = 3,455,140.62
5. Step 5: Solve for x
   x = 3,455,140.62/2,548.72
6. Step 6: Final answer
   x = 1,355.64