Finding the Fourth Proportional to 2,548.55, 3,821.61 and 904.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.55 : 3,821.61 = 904.05 : x
2. Step 2: Convert to fraction form
   2,548.55/3,821.61 = 904.05/x
3. Step 3: Cross multiply
   2,548.55x = 3,821.61 × 904.05
4. Step 4: Simplify right side
   2,548.55x = 3,454,926.52
5. Step 5: Solve for x
   x = 3,454,926.52/2,548.55
6. Step 6: Final answer
   x = 1,355.64