Finding the Fourth Proportional to 2,592.68, 3,889.31 and 837.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,592.68 : 3,889.31 = 837.81 : x
2. Step 2: Convert to fraction form
   2,592.68/3,889.31 = 837.81/x
3. Step 3: Cross multiply
   2,592.68x = 3,889.31 × 837.81
4. Step 4: Simplify right side
   2,592.68x = 3,258,498.62
5. Step 5: Solve for x
   x = 3,258,498.62/2,592.68
6. Step 6: Final answer
   x = 1,256.81