Finding the Fourth Proportional to 1,820.72, 2,512.78 and 1,074.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820.72 : 2,512.78 = 1,074.92 : x
2. Step 2: Convert to fraction form
   1,820.72/2,512.78 = 1,074.92/x
3. Step 3: Cross multiply
   1,820.72x = 2,512.78 × 1,074.92
4. Step 4: Simplify right side
   1,820.72x = 2,701,037.48
5. Step 5: Solve for x
   x = 2,701,037.48/1,820.72
6. Step 6: Final answer
   x = 1,483.50