Finding the Fourth Proportional to 2,084.79, 3,127.63 and 786.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.79 : 3,127.63 = 786.25 : x
2. Step 2: Convert to fraction form
   2,084.79/3,127.63 = 786.25/x
3. Step 3: Cross multiply
   2,084.79x = 3,127.63 × 786.25
4. Step 4: Simplify right side
   2,084.79x = 2,459,099.09
5. Step 5: Solve for x
   x = 2,459,099.09/2,084.79
6. Step 6: Final answer
   x = 1,179.54