Finding the Fourth Proportional to 2,084.32, 3,127.20 and 786.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.32 : 3,127.20 = 786.16 : x
2. Step 2: Convert to fraction form
   2,084.32/3,127.20 = 786.16/x
3. Step 3: Cross multiply
   2,084.32x = 3,127.20 × 786.16
4. Step 4: Simplify right side
   2,084.32x = 2,458,479.55
5. Step 5: Solve for x
   x = 2,458,479.55/2,084.32
6. Step 6: Final answer
   x = 1,179.51