Finding the Fourth Proportional to 4,851.92, 7,279.05 and 1,389.17

Step by Step Solution

1. Step 1: Write the proportion equation
   4,851.92 : 7,279.05 = 1,389.17 : x
2. Step 2: Convert to fraction form
   4,851.92/7,279.05 = 1,389.17/x
3. Step 3: Cross multiply
   4,851.92x = 7,279.05 × 1,389.17
4. Step 4: Simplify right side
   4,851.92x = 10,111,837.89
5. Step 5: Solve for x
   x = 10,111,837.89/4,851.92
6. Step 6: Final answer
   x = 2,084.09