Finding the Fourth Proportional to 2,340.82, 3,510.33 and 780.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340.82 : 3,510.33 = 780.52 : x
2. Step 2: Convert to fraction form
   2,340.82/3,510.33 = 780.52/x
3. Step 3: Cross multiply
   2,340.82x = 3,510.33 × 780.52
4. Step 4: Simplify right side
   2,340.82x = 2,739,882.77
5. Step 5: Solve for x
   x = 2,739,882.77/2,340.82
6. Step 6: Final answer
   x = 1,170.48