Finding the Fourth Proportional to 1,818.86, 2,510.40 and 1,072.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.86 : 2,510.40 = 1,072.53 : x
2. Step 2: Convert to fraction form
   1,818.86/2,510.40 = 1,072.53/x
3. Step 3: Cross multiply
   1,818.86x = 2,510.40 × 1,072.53
4. Step 4: Simplify right side
   1,818.86x = 2,692,479.31
5. Step 5: Solve for x
   x = 2,692,479.31/1,818.86
6. Step 6: Final answer
   x = 1,480.32