Finding the Fourth Proportional to 2,547.58, 3,820.89 and 904.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.58 : 3,820.89 = 904.12 : x
2. Step 2: Convert to fraction form
   2,547.58/3,820.89 = 904.12/x
3. Step 3: Cross multiply
   2,547.58x = 3,820.89 × 904.12
4. Step 4: Simplify right side
   2,547.58x = 3,454,543.07
5. Step 5: Solve for x
   x = 3,454,543.07/2,547.58
6. Step 6: Final answer
   x = 1,356.01