Finding the Fourth Proportional to 1,821.05, 2,512.80 and 1,074.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.05 : 2,512.80 = 1,074.74 : x
2. Step 2: Convert to fraction form
   1,821.05/2,512.80 = 1,074.74/x
3. Step 3: Cross multiply
   1,821.05x = 2,512.80 × 1,074.74
4. Step 4: Simplify right side
   1,821.05x = 2,700,606.67
5. Step 5: Solve for x
   x = 2,700,606.67/1,821.05
6. Step 6: Final answer
   x = 1,482.99