Finding the Fourth Proportional to 2,755.00, 4,131.89 and 780.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,755.00 : 4,131.89 = 780.59 : x
2. Step 2: Convert to fraction form
   2,755.00/4,131.89 = 780.59/x
3. Step 3: Cross multiply
   2,755.00x = 4,131.89 × 780.59
4. Step 4: Simplify right side
   2,755.00x = 3,225,300.10
5. Step 5: Solve for x
   x = 3,225,300.10/2,755.00
6. Step 6: Final answer
   x = 1,170.71