Finding the Fourth Proportional to 2,547.98, 3,821.81 and 904.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.98 : 3,821.81 = 904.31 : x
2. Step 2: Convert to fraction form
   2,547.98/3,821.81 = 904.31/x
3. Step 3: Cross multiply
   2,547.98x = 3,821.81 × 904.31
4. Step 4: Simplify right side
   2,547.98x = 3,456,077.37
5. Step 5: Solve for x
   x = 3,456,077.37/2,547.98
6. Step 6: Final answer
   x = 1,356.40