Finding the Fourth Proportional to 2,257.00, 3,385.88 and 776.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257.00 : 3,385.88 = 776.15 : x
2. Step 2: Convert to fraction form
   2,257.00/3,385.88 = 776.15/x
3. Step 3: Cross multiply
   2,257.00x = 3,385.88 × 776.15
4. Step 4: Simplify right side
   2,257.00x = 2,627,950.76
5. Step 5: Solve for x
   x = 2,627,950.76/2,257.00
6. Step 6: Final answer
   x = 1,164.36