Finding the Fourth Proportional to 2,454.51, 3,679.82 and 1,221.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.51 : 3,679.82 = 1,221.25 : x
2. Step 2: Convert to fraction form
   2,454.51/3,679.82 = 1,221.25/x
3. Step 3: Cross multiply
   2,454.51x = 3,679.82 × 1,221.25
4. Step 4: Simplify right side
   2,454.51x = 4,493,969.42
5. Step 5: Solve for x
   x = 4,493,969.42/2,454.51
6. Step 6: Final answer
   x = 1,830.90