Finding the Fourth Proportional to 2,547.98, 3,820.71 and 904.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.98 : 3,820.71 = 904.28 : x
2. Step 2: Convert to fraction form
   2,547.98/3,820.71 = 904.28/x
3. Step 3: Cross multiply
   2,547.98x = 3,820.71 × 904.28
4. Step 4: Simplify right side
   2,547.98x = 3,454,991.64
5. Step 5: Solve for x
   x = 3,454,991.64/2,547.98
6. Step 6: Final answer
   x = 1,355.97