Finding the Fourth Proportional to 2,548.23, 3,822.17 and 904.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.23 : 3,822.17 = 904.57 : x
2. Step 2: Convert to fraction form
   2,548.23/3,822.17 = 904.57/x
3. Step 3: Cross multiply
   2,548.23x = 3,822.17 × 904.57
4. Step 4: Simplify right side
   2,548.23x = 3,457,420.32
5. Step 5: Solve for x
   x = 3,457,420.32/2,548.23
6. Step 6: Final answer
   x = 1,356.79