Finding the Fourth Proportional to 2,805.47, 4,210.04 and 1,074.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,805.47 : 4,210.04 = 1,074.09 : x
2. Step 2: Convert to fraction form
   2,805.47/4,210.04 = 1,074.09/x
3. Step 3: Cross multiply
   2,805.47x = 4,210.04 × 1,074.09
4. Step 4: Simplify right side
   2,805.47x = 4,521,980.34
5. Step 5: Solve for x
   x = 4,521,980.34/2,805.47
6. Step 6: Final answer
   x = 1,611.84