Finding the Fourth Proportional to 2,511.62, 3,768.04 and 780.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,511.62 : 3,768.04 = 780.26 : x
2. Step 2: Convert to fraction form
   2,511.62/3,768.04 = 780.26/x
3. Step 3: Cross multiply
   2,511.62x = 3,768.04 × 780.26
4. Step 4: Simplify right side
   2,511.62x = 2,940,050.89
5. Step 5: Solve for x
   x = 2,940,050.89/2,511.62
6. Step 6: Final answer
   x = 1,170.58