Finding the Fourth Proportional to 2,085.00, 3,128.41 and 786.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.00 : 3,128.41 = 786.16 : x
2. Step 2: Convert to fraction form
   2,085.00/3,128.41 = 786.16/x
3. Step 3: Cross multiply
   2,085.00x = 3,128.41 × 786.16
4. Step 4: Simplify right side
   2,085.00x = 2,459,446.71
5. Step 5: Solve for x
   x = 2,459,446.71/2,085.00
6. Step 6: Final answer
   x = 1,179.59