Finding the Fourth Proportional to 2,592.61, 3,889.56 and 837.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,592.61 : 3,889.56 = 837.79 : x
2. Step 2: Convert to fraction form
   2,592.61/3,889.56 = 837.79/x
3. Step 3: Cross multiply
   2,592.61x = 3,889.56 × 837.79
4. Step 4: Simplify right side
   2,592.61x = 3,258,634.47
5. Step 5: Solve for x
   x = 3,258,634.47/2,592.61
6. Step 6: Final answer
   x = 1,256.89