Finding the Fourth Proportional to 1,780.70, 2,665.59 and 1,518.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.70 : 2,665.59 = 1,518.26 : x
2. Step 2: Convert to fraction form
   1,780.70/2,665.59 = 1,518.26/x
3. Step 3: Cross multiply
   1,780.70x = 2,665.59 × 1,518.26
4. Step 4: Simplify right side
   1,780.70x = 4,047,058.67
5. Step 5: Solve for x
   x = 4,047,058.67/1,780.70
6. Step 6: Final answer
   x = 2,272.73