Finding the Fourth Proportional to 1,818.60, 2,510.06 and 1,072.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.60 : 2,510.06 = 1,072.29 : x
2. Step 2: Convert to fraction form
   1,818.60/2,510.06 = 1,072.29/x
3. Step 3: Cross multiply
   1,818.60x = 2,510.06 × 1,072.29
4. Step 4: Simplify right side
   1,818.60x = 2,691,499.69
5. Step 5: Solve for x
   x = 2,691,499.69/1,818.60
6. Step 6: Final answer
   x = 1,479.98