Finding the Fourth Proportional to 1,818.76, 2,509.54 and 1,072.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.76 : 2,509.54 = 1,072.84 : x
2. Step 2: Convert to fraction form
   1,818.76/2,509.54 = 1,072.84/x
3. Step 3: Cross multiply
   1,818.76x = 2,509.54 × 1,072.84
4. Step 4: Simplify right side
   1,818.76x = 2,692,334.89
5. Step 5: Solve for x
   x = 2,692,334.89/1,818.76
6. Step 6: Final answer
   x = 1,480.31